A studio kit shot of the Bosch 12V Max brushless 3/8-inch hammer drill/driver, including the handheld tool, two 12V Max 2.0 Ah lithium-ion batteries, a battery charger, and a blue and black zippered carrying bag with the Bosch logo.
Product infographic of the GSB12V-300 hammer drill/driver with callouts highlighting its key features: a high torque-to-weight ratio for professional performance, a two-speed transmission for optimized torque and speed, a brushless motor for maximized runtime, a compact housing for hard-to-reach areas, 20 plus 1 clutch settings for accurate driving, and integrated LED light.
A direct side-profile view of the blue and black Bosch brushless hammer drill/driver standing vertically, showcasing the red trigger, the torque and mode adjustment collar, and the integrated battery fuel gauge.
A direct side-profile view of the Bosch 12V Max hammer drill/driver against a white background, highlighting its professional compact design and ergonomic textured grip.
A direct front view of the Bosch hammer drill/driver showcasing the 3/8-inch keyless chuck, the red trigger button, and the slim profile of the battery housing.
An action shot of a professional in protective gear using the compact Bosch hammer drill/driver to bore a hole into an electrical junction box mounted on a white cinder block wall.
A worker using the 12V Max brushless hammer drill/driver to bore a pilot hole into a white wooden cabinet frame held together by clamps.
Close-up action shot showing the Bosch drill/driver being used to install a brass hinge onto the top edge of a wooden cabinet door, demonstrating its precision in delicate tasks.
Action shot of a user wearing protective gloves using the 12V Max hammer drill/driver to bore a hole into a sheet of metal ductwork on a jobsite.
A graphic detailing the Bosch 12V Max Limited Warranty, featuring the Bosch logo and text stating a 3-year warranty for the tool, battery, and charger, effective February 1, 2025.
A studio kit shot of the Bosch 12V Max brushless 3/8-inch hammer drill/driver, including the handheld tool, two 12V Max 2.0 Ah lithium-ion batteries, a battery charger, and a blue and black zippered carrying bag with the Bosch logo.
Product infographic of the GSB12V-300 hammer drill/driver with callouts highlighting its key features: a high torque-to-weight ratio for professional performance, a two-speed transmission for optimized torque and speed, a brushless motor for maximized runtime, a compact housing for hard-to-reach areas, 20 plus 1 clutch settings for accurate driving, and integrated LED light.
A direct side-profile view of the blue and black Bosch brushless hammer drill/driver standing vertically, showcasing the red trigger, the torque and mode adjustment collar, and the integrated battery fuel gauge.
A direct side-profile view of the Bosch 12V Max hammer drill/driver against a white background, highlighting its professional compact design and ergonomic textured grip.
A direct front view of the Bosch hammer drill/driver showcasing the 3/8-inch keyless chuck, the red trigger button, and the slim profile of the battery housing.
An action shot of a professional in protective gear using the compact Bosch hammer drill/driver to bore a hole into an electrical junction box mounted on a white cinder block wall.
A worker using the 12V Max brushless hammer drill/driver to bore a pilot hole into a white wooden cabinet frame held together by clamps.
Close-up action shot showing the Bosch drill/driver being used to install a brass hinge onto the top edge of a wooden cabinet door, demonstrating its precision in delicate tasks.
Action shot of a user wearing protective gloves using the 12V Max hammer drill/driver to bore a hole into a sheet of metal ductwork on a jobsite.
A graphic detailing the Bosch 12V Max Limited Warranty, featuring the Bosch logo and text stating a 3-year warranty for the tool, battery, and charger, effective February 1, 2025.
BOSCH

Bosch Hammer Drill GSB12V-300B22 12V Brushless Driver Kit (3/8 Keyless Chuck 300 In-Lbs Torque 26250 BPM Two 2Ah Batteries Charger Bag Masonry Fastening)

In stock
SKU: GSB12V-300B22
$229.00 USD

Description

Bosch Promtional Logo Logout

Trade-Focused 12V Brushless 3/8-Inch Percussion Driver System for Ultra-Compact Brick Boring and Precision Cabinet Hardware Installation

The Bosch GSB12V-300B22 12V Max Brushless 3/8-Inch Hammer Drill Driver Kit delivers contractor-grade mechanical percussion velocity and rotational torque within geometrically restricted building structures. Driven by a high-efficiency brushless motor, this compact power tool generates a variable speed layout matching 0-460 RPM or 0-1,750 RPM alongside a strong 26,250 beats per minute (BPM) impact frequency and 300 In.-Lbs. maximum torque profile. This mobile drilling solution resolves physical clearance limitations and user muscle fatigue problems during high-volume overhead electrical grid rough-ins or tight sub-cabinet plumbing connections by maintaining an agile 6.7-inch head length and a lightweight system profile of only 2.2 lbs. Supplied with two 2.0 Ah Lithium-Ion batteries and a dedicated speed charger, this system ensures uniform bit tracking via a three-jaw keyless chuck matrix and a 20+1 precision mechanical clutch.

Best Used For:

  • Masonry and Brick Anchoring: Boring accurate pilot holes into brick walls, stone blocks, and concrete mortar lines using high-frequency percussion hammer mode.
  • Cramped Cabinet Hardware Seating: Driving structural fasteners and mounting brackets inside narrow kitchen sink frames or low-light vanity enclosures without surface scarring.
  • Overhead Utility Routing: Running wood spade boring bits or multi-material hole saws inside narrow ceiling tracks or small stud bay openings for HVAC installations.

Key Performance & Safety Features

  • High-Efficiency Brushless Motor: Provides extended operational lifecycle metrics and high structural efficiency while producing up to 300 In.-Lbs. of max torque force.
  • Short 6.7-Inch Profiling Head: Optimized minimal frame length enables complete linear hardware access into tight architectural corners and confined service spaces.
  • Dual Gear Transmission: Permits operators to pivot mechanically between low-gear high torque (0-460 RPM) and high-gear rapid hole boring (0-1,750 RPM).
  • 20+1 Mechanical Clutch: Specialized slip rings allow technical variation of output limits to eliminate hardware stripping and over-driving.
  • Three-Jaw Keyless Chuck: Hardened internal gripping faces deliver secure bit jaw compression and allow rapid tool swaps on the fly.

What's Included

  • (1) GSB12V-300 12V Max Brushless 3/8 In. Hammer Drill/Driver
  • (2) 12V Max Lithium-Ion 2.0 Ah Slim Batteries
  • (1) 12V Max Battery Speed Charger
  • (1) Four-Tip Secure Bit Holder Attachment
  • (4) Impact Tough Screwdriving Insert Bits
  • (1) Steel Spring Belt Clip
  • (1) Protective Fabric Transport Bag

Technical Specifications

Specification Value
Brand Bosch
Model Number GSB12V-300B22
Voltage Rating 12V Max
Motor Structural Type Brushless DC Engine
Chuck Sleeve Diameter 3/8 in
Chuck Jaw Architecture Keyless Three-Jaw Interface
Maximum Rotational Torque 300 In.-Lbs.
Maximum Impact Speed 26,250 BPM
No Load RPM Range 0 - 460 / 0 - 1,750 RPM
Clutch Indexed Increments 20 Settings + 1 Bypass Mode
Head Frame Length 6.7 in
Chassis Tool Height 6.3 in
Chassis Tool Width 2.0 in
Net Weight (with Battery) 2.2 lbs.

Pro-Tip: When boring structural anchor points into dense masonry wall segments, avoid using excessive axial pressure. Let the 26,250 BPM percussive action perform the structural material clearing to protect the carbide drilling tips and eliminate internal tool head heat buildup.