An isolated product studio three-quarter view of the complete Bosch GNA18V-16EN 18V cordless sheet metal nibbler set against a clean white background, showcasing its silver-finished cast metal cutting head housing, tool-free rotating die holder, red sliding power switch toggle, and ergonomic blue and black barrel-grip motor handle chassis.
An action shot of a sheet metal worker wearing heavy-duty padded work gloves using the Bosch 18V cordless nibbler to punch a precise straight path across a ribbed white corrugated roofing panel along a pre-marked black marker guidance line.
A close-up jobsite view of a metal fabricator wearing protective gloves firmly holding the Bosch brushless cordless nibbler horizontally to execute a clean, distortion-free line cut down a heavy sheet of steel diamond tread plate resting on a workbench.
A close-up under-panel view highlighting the underside of the Bosch nibbler's punch mechanism as it cuts smoothly through a white-coated corrugated structural steel sheet, detailing the tool-free rotating die orientation with a worker in the background.
A close-up macro action shot focused on the rugged silver cast metal cutting head of the Bosch 18V nibbler as it punches a clean, burr-free linear seam directly into a heavy industrial sheet metal plate.
An operational action view of the Bosch brushless sheet metal nibbler being steered by a worker in safety gloves to punch a smooth, tight radiused scroll curve path out of an extended sheet of copper or thin brass paneling.
A wide jobsite workshop overview showing the compact Bosch cordless sheet metal nibbler resting flat on its side across a large sheet of reflective galvanized steel, surrounded by small crescent-shaped metal punch chips scattered on a workshop bench surface.
New Bosch 18V Nibbler | Bosch WOC 2026 promotional video
An isolated product studio three-quarter view of the complete Bosch GNA18V-16EN 18V cordless sheet metal nibbler set against a clean white background, showcasing its silver-finished cast metal cutting head housing, tool-free rotating die holder, red sliding power switch toggle, and ergonomic blue and black barrel-grip motor handle chassis.
An action shot of a sheet metal worker wearing heavy-duty padded work gloves using the Bosch 18V cordless nibbler to punch a precise straight path across a ribbed white corrugated roofing panel along a pre-marked black marker guidance line.
A close-up jobsite view of a metal fabricator wearing protective gloves firmly holding the Bosch brushless cordless nibbler horizontally to execute a clean, distortion-free line cut down a heavy sheet of steel diamond tread plate resting on a workbench.
A close-up under-panel view highlighting the underside of the Bosch nibbler's punch mechanism as it cuts smoothly through a white-coated corrugated structural steel sheet, detailing the tool-free rotating die orientation with a worker in the background.
A close-up macro action shot focused on the rugged silver cast metal cutting head of the Bosch 18V nibbler as it punches a clean, burr-free linear seam directly into a heavy industrial sheet metal plate.
An operational action view of the Bosch brushless sheet metal nibbler being steered by a worker in safety gloves to punch a smooth, tight radiused scroll curve path out of an extended sheet of copper or thin brass paneling.
A wide jobsite workshop overview showing the compact Bosch cordless sheet metal nibbler resting flat on its side across a large sheet of reflective galvanized steel, surrounded by small crescent-shaped metal punch chips scattered on a workshop bench surface.
New Bosch 18V Nibbler | Bosch WOC 2026 promotional video
BOSCH

Bosch Sheet Metal Nibbler GNA18V-16EN 18V Brushless 16 Gauge Bare Tool (700W Corded Power Equivalent 360 Degree Rotating Die Corrugated HVAC Cutting)

In stock
SKU: GNA18V-16EN
$429.00 USD

Description

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Bosch GNA18V-16EN 18V Brushless 16-Gauge Cordless Sheet Metal Nibbler Bare Tool

The Bosch GNA18V-16EN 18V Brushless Cordless 16-Gauge Sheet Metal Nibbler operates as a portable metal fabrication power tool engineered to cut corrugated roofing panels, sheet metal, and HVAC ductwork without distorting panel edges. Driven by an 18V brushless motor that delivers 700W corded-equivalent power, this cordless nibbler cuts 16-gauge mild steel and features a 360-degree tool-free rotating die holder for directional indexing. Weighing 4.25 pounds, this German-engineered tool incorporates electronic soft start, restart protection, overload motor monitoring, and a slim barrel grip to execute burr-free cuts along straight lines, right angles, and curves.

**Battery and charger sold separately.

Best Used For:

  • Corrugated Metal Roofing & Siding Installation: Cutting 16-gauge corrugated steel roofing sheets and structural metal wall panels along ridge profiles without bending sheet edges.
  • HVAC Ductwork & Ventilation Pipe Fitting: Executing tight curve cuts and right-angle notches in galvanized metal air ducts and spiral ventilation piping.
  • Burr-Free Sheet Metal Fabrication: Punching clean, spark-free cuts in mild steel and aluminum sheets to eliminate secondary grinding steps.

Key Performance & Safety Features

  • 700W Corded-Equivalent Brushless Motor: High-efficiency motor delivers corded-level cutting throughput to slice 16-gauge mild steel without cord restrictions.
  • 360-Degree Tool-Free Rotating Die: Allows rapid directional die indexing for seamless cutting shifts along straight lines, tight curves, or corners.
  • Distortion-Free Punch Cutting Action: Slices metal cleanly without twisting sheet edges or generating hazardous hot sparks.
  • Electronic Restart & Soft Start Protection: Soft start minimizes startup torque, while restart protection prevents accidental motor engagement during battery swaps.
  • Automated Overload Motor Defense: Electronic monitors track thermal conditions and shut down power under severe cutting resistance to protect internal components.
  • Slim Ergonomic 4.25-Pound Chassis: Lightweight barrel handle housing reduces operator fatigue during continuous overhead or vertical sheet cutting.

What's Included

  • (1) Bosch GNA18V-16EN 18V Brushless 16-Gauge Cordless Nibbler
  • (1) Built-In Rotating Die Holder Assembly

Technical Specifications

Brand Manufacturer Bosch
Model Designation OEM SKU GNA18V-16EN
Power Source Platform 18V DC Cordless Lithium-Ion System
Motor Technology Configuration High-Efficiency Brushless Motor
Corded Output Equivalence 700 W Motor Output Equivalent
Maximum Cutting Capacity (Steel) 16-Gauge Mild Steel (0.0598 in. / 1.52 mm)
Die Holder Adjustment Profile 360-Degree Tool-Free Multi-Directional Indexing
Electronic Safety Controls Soft Start & Restart Protection Electronics
Overload Protection Mechanism Electronic Motor Thermal Monitoring
Bare Tool Net Weight 4.25 lbs. (1.93 kg)
Total Package Dimensions 13.62 x 6.14 x 3.62 in. (345.9 x 156.0 x 91.9 mm)
Country of Origin Germany
Manufacturer Warranty Coverage 5-Year Limited Manufacturer Tool Warranty

Pro-Tip: When cutting corrugated steel roofing or tight duct radii with the GNA18V-16EN, apply light machine oil along the cut line before starting. Lubricating the metal surface reduces friction on the punch and die, preserving cutter sharpness and maintaining high cutting speed through 16-gauge sheet metal.