A side-angle profile shot of the standalone Bosch GEX12V-77N 12V Max Cordless 3-Inch Random Orbital Sander isolated against a white background. This compact handheld auto detailing buffer features an ergonomic blue and black rubberized barrel grip handle, a red variable-speed trigger switch, an internal brushless motor indicator, and a bottom backing plate configured for small spot paint repair.
A side-view profile catalog shot of the Bosch GEX12V-77N cordless handheld car scratch sander. Pictured from the side against a white backdrop, the tool showcases its compact housing layout, five-stage battery status LED panel on the upper motor casing, soft rubber overmold grip textures, and a distinct red trigger mechanism for precision speed control.
Bosch GEX12V-77N product feature layout diagram engineered for search engine algorithms. Set against a solid dark blue background, pointer line indicators highlight specific tool advantages, labeling the 5-speed control dial, trigger lock-on switch, low-vibration ergonomics, and compact lightweight design on this 12V 3-inch 2.5 mm orbital sander.
A close-up action view of a detailing professional's hand guiding the Bosch GEX12V-77N cordless handheld sander across the black paint surface of a vehicle panel. The tool is equipped with a black hook and loop backing pad interface, set above a bold blue graphic text banner reading 5-speed control for versatile sanding.
An automotive detailer wearing clear protective glasses utilizing the Bosch GEX12V-77N brushless random orbital sander to refine minor imperfections on a black car door panel. This profile view illustrates the compact tool layout and stable control, enhanced by a lower text box stating Ergonomic design for superior control and comfort.
A close-up application shot showing a detail craftsman finishing a premium mirror-like black vehicle surface using the Bosch GEX12V-77N cordless paint scratch sander. The image captures the dynamic finishing motion on the bodywork inside an automotive workshop, accompanied by lower text reading Flawless, swirl-free fine finishing.
Official product warranty details graphic layout for the Bosch 12V Max Bare Tool platform on a deep blue background card. The high-conversion marketing text outlines an updated 3 year tool replacement limited warranty structure with online web registration links and phone support parameters for updated trade protection.
An automotive body technician wearing gray and black protective work gloves using the Bosch GEX12V-77N 12V Max random orbital sander to complete wet or dry finishing on a dark car hood. The tool's compact size allows for focused surface leveling on localized spot paint repairs.
A comprehensive workshop view of a refinishing specialist bent over a gloss black car surface, carefully operating the compact Bosch GEX12V-77N handheld brushless sander. The backdrop highlights a bright, professional auto detailing garage with panoramic windows illuminating the workpiece.
A close-up view of a technician's hand holding the Bosch GEX12V-77N 12V Max random orbital sander from the side, with the thumb resting on the integrated top-mounted 5-speed digital user interface. The battery status indicator lights glow green, showing immediate operational readiness for professional car paint repair.
An open Bosch L-Boxx system hard carrying case lined with a custom-cut dark foam insert organizer tray. Nestled securely inside the protective foam compartments are the Bosch 12V random orbital sander bare tool, a compact matching 12V handheld polisher, two attached rechargeable lithium-ion battery packs, and a standalone 12V max power cell ready for mobile auto detailing tasks.
An automotive paint reconditioning specialist wearing clear safety glasses and black protective gloves operating the compact Bosch 12V random orbital sander bare tool. Pictured inside a clean commercial factory floor or bodyshop, the technician holds the sander vertically with one hand to sand and blend clear coat paint imperfections on a silver car door panel.
A side-angle profile shot of the standalone Bosch GEX12V-77N 12V Max Cordless 3-Inch Random Orbital Sander isolated against a white background. This compact handheld auto detailing buffer features an ergonomic blue and black rubberized barrel grip handle, a red variable-speed trigger switch, an internal brushless motor indicator, and a bottom backing plate configured for small spot paint repair.
A side-view profile catalog shot of the Bosch GEX12V-77N cordless handheld car scratch sander. Pictured from the side against a white backdrop, the tool showcases its compact housing layout, five-stage battery status LED panel on the upper motor casing, soft rubber overmold grip textures, and a distinct red trigger mechanism for precision speed control.
Bosch GEX12V-77N product feature layout diagram engineered for search engine algorithms. Set against a solid dark blue background, pointer line indicators highlight specific tool advantages, labeling the 5-speed control dial, trigger lock-on switch, low-vibration ergonomics, and compact lightweight design on this 12V 3-inch 2.5 mm orbital sander.
A close-up action view of a detailing professional's hand guiding the Bosch GEX12V-77N cordless handheld sander across the black paint surface of a vehicle panel. The tool is equipped with a black hook and loop backing pad interface, set above a bold blue graphic text banner reading 5-speed control for versatile sanding.
An automotive detailer wearing clear protective glasses utilizing the Bosch GEX12V-77N brushless random orbital sander to refine minor imperfections on a black car door panel. This profile view illustrates the compact tool layout and stable control, enhanced by a lower text box stating Ergonomic design for superior control and comfort.
A close-up application shot showing a detail craftsman finishing a premium mirror-like black vehicle surface using the Bosch GEX12V-77N cordless paint scratch sander. The image captures the dynamic finishing motion on the bodywork inside an automotive workshop, accompanied by lower text reading Flawless, swirl-free fine finishing.
Official product warranty details graphic layout for the Bosch 12V Max Bare Tool platform on a deep blue background card. The high-conversion marketing text outlines an updated 3 year tool replacement limited warranty structure with online web registration links and phone support parameters for updated trade protection.
An automotive body technician wearing gray and black protective work gloves using the Bosch GEX12V-77N 12V Max random orbital sander to complete wet or dry finishing on a dark car hood. The tool's compact size allows for focused surface leveling on localized spot paint repairs.
A comprehensive workshop view of a refinishing specialist bent over a gloss black car surface, carefully operating the compact Bosch GEX12V-77N handheld brushless sander. The backdrop highlights a bright, professional auto detailing garage with panoramic windows illuminating the workpiece.
A close-up view of a technician's hand holding the Bosch GEX12V-77N 12V Max random orbital sander from the side, with the thumb resting on the integrated top-mounted 5-speed digital user interface. The battery status indicator lights glow green, showing immediate operational readiness for professional car paint repair.
An open Bosch L-Boxx system hard carrying case lined with a custom-cut dark foam insert organizer tray. Nestled securely inside the protective foam compartments are the Bosch 12V random orbital sander bare tool, a compact matching 12V handheld polisher, two attached rechargeable lithium-ion battery packs, and a standalone 12V max power cell ready for mobile auto detailing tasks.
An automotive paint reconditioning specialist wearing clear safety glasses and black protective gloves operating the compact Bosch 12V random orbital sander bare tool. Pictured inside a clean commercial factory floor or bodyshop, the technician holds the sander vertically with one hand to sand and blend clear coat paint imperfections on a silver car door panel.
BOSCH

Bosch Orbit Sander GEX12V-77N 12V Max 3 Inch Cordless Brushless Random Orbital Bare Tool (8000 RPM 3/32 Orbit Auto Paint Wet Dry Finishing Buffer)

Only 2 left
SKU: GEX12V-77N
$349.00 USD

Description

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Bosch 12V Max Brushless 3 Inch Cordless Random Orbital Sander GEX12V-77N Bare Tool

The Bosch GEX12V-77N 12V Max Brushless 3-Inch Cordless Random Orbital Sander serves as an ultra-portable surface refinement power tool engineered for wet or dry autobody sanding, clear coat blending, and localized paint prep. Powered by an industrial brushless motor delivering 8,000 RPM, this 12V random orbit sander features a fine 3/32-inch (2.4 mm) orbit stroke diameter, a 3-inch hook-and-loop backing pad, a digital handle interface console, and a net bare tool weight of 1.3 pounds. Compatible with Bosch 12V Max lithium-ion batteries, this compact palm sander incorporates a variable-speed trigger with a lock-on button and a protective rear rubber resting pad to prevent surface scoring across contoured vehicle panels and body fillers.

**Battery and charger sold separately.**

Best Used For:

  • Autobody Clear Coat Blending & Paint Feathering: Executing fine wet or dry sanding passes on localized paint repairs using the tight 3/32-inch orbit stroke.
  • Tight Panel & Bumper Feathering: Navigating narrow door pillars, bumper recesses, and mirror housings where full-sized 5-inch and 6-inch sanders cannot fit.
  • Localized Body Filler & Primer Sanding: Leveling spot putty, primer surfacer, and gel coat fills on composite and metal panels with single-handed barrel grip guidance.

Key Performance & Safety Features

  • High-Efficiency 8,000 RPM Brushless Motor: Advanced brushless motor maintains constant orbital speed under load for uniform stock removal rates.
  • Precise 3/32-Inch Random Orbit Stroke: Tight micro-orbit motion prevents deep cross-grain scoring and swirl marks on delicate clear coats and clear finishes.
  • Digital Smart User Interface Console: Handle-mounted digital screen provides push-button access to electronic speed settings, battery level readings, and timed auto-shutoff presets.
  • Continuous Run Lock-On Thumb Button: Side-mounted lock-on switch maintains trigger engagement to eliminate hand fatigue during prolonged surface prep sessions.
  • Protective Rear Rubber Resting Pad: Rear rubber stabilizer holds the tool horizontally when placed on workbenches to prevent head contact and dirt pickup.
  • Featherweight 1.3-Pound Ergonomic Barrel: Ultra-slim palm grip chassis allows one-handed guidance and precise control overhead or along vertical body lines.

What's Included

  • (1) Bosch GEX12V-77N 12V Max Brushless 3" Random Orbital Sander (Bare Tool)
  • (1) Heavy-Duty 3" Hook-and-Loop Backing Pad
  • (1) Pad Change Service Spindle Wrench

Technical Specifications

Brand Manufacturer Bosch
Model Number SKU GEX12V-77N
Voltage Platform Capacity 12V Max DC Lithium-Ion System
Motor Configuration High-Efficiency Cordless Brushless Motor
Sanding Pad Diameter 3.0 in. (76.2 mm)
Orbit Diameter Stroke 0.09375 in. (3/32 in. / 2.4 mm Precision Stroke)
Maximum Rotation Speed 8,000 RPM
Speed Control System Multi-Stage Digital Interface + Variable Speed Trigger
Sander Action Motion Random Orbital (Dual Action)
Abrasive Mounting Style Tactile Hook and Loop System
Bare Tool Net Weight 1.3 lbs. (0.59 kg)
Handle Grip Style Straight Barrel Palm Grip with Rubber Overmold
Global UPC Barcode 000346829297
Manufacturer Warranty Period 3 Years Limited Cordless Tool Warranty

Pro-Tip: When performing wet color-sanding passes on fresh automotive clear coats using 2000 to 3000 grit film discs, keep the backing pad lubricated with a light mist of water and mild soap solution. Operating the GEX12V-77N at lower digital speed settings with minimal downward pressure prevents slurry buildup and keeps the 3/32-inch micro-orbit floating evenly over the clear coat surface.