Bosch GSB12V-31 Cordless Impact Drill (Solo, L)

When a standard drill driver stalls on tough materials, the Bosch GSB12V-31 steps in with a brushless motor and impact mechanism that power through masonry, steel, and dense wood without the cord getting in the way. This 12V tool delivers the muscle of a corded drill in a compact, one-handed package, so you can work overhead or in tight corners without fatigue.

Who is it for

Trade professionals and serious DIYers who need a reliable, lightweight impact drill for everyday drilling and screwdriving in wood, metal, and masonry. It is especially suited for electricians, carpenters, and maintenance crews who value mobility and quick bit changes on the job site.

Main features

• Brushless motor for longer runtime, higher efficiency, and maintenance-free operation.
• Two-speed gearbox (0–460 / 0–1,750 rpm) with 20+1 torque settings for precise control.
• Impact function delivers up to 24,750 bpm for fast drilling in brick and concrete.
• Compact 12V design with LED light to illuminate dark work areas.
• Electronic Motor Protection (EMP) and Electronic Cell Protection (ECP) safeguard the tool and battery from overload, overheating, and deep discharge.
• Solo version: battery and charger not included, ideal for users already on the Bosch Professional 12V platform.

Specifications

• Voltage: 12 V
• Motor type: Brushless
• Max. torque (hard/soft): 31 / 19 Nm
• No-load speed (1st gear): 0 – 460 rpm
• No-load speed (2nd gear): 0 – 1,750 rpm
• Max. impact rate: 24,750 bpm
• Chuck capacity: 1.5 – 10 mm
• Torque settings: 20+1
• Max. drilling diameter in wood: 20 mm
• Max. drilling diameter in steel: 10 mm
• Max. drilling diameter in masonry: 8 mm
• Battery compatibility: Bosch Professional 12V Li-ion system
• Tool holder: Three-jaw chuck
• Sound pressure level: 88 dB(A)
• Sound power level: 99 dB(A)
• Vibration (drilling in metal): 2.5 m/s²
• Vibration (impact drilling in masonry): 10.7 m/s²
• Features: LED light, EMP, ECP

Tips

Pair this tool with a Bosch Professional 12V 2.0Ah or larger battery for extended runtime. Use the impact mode only for masonry and concrete; switch to rotary-only for wood and metal to avoid unnecessary wear. The LED light stays on for a few seconds after releasing the trigger, helping you locate the next screw position in dim conditions.