Bosch GSR 18V-21 Professional 1800 RPM Black, Blue

The Bosch GSR 18V-21 Professional is a pistol grip drill designed for general drilling and screwdriving tasks. With a maximum idle speed of 1800 RPM and an 18V Lithium-Ion battery power source, this compact tool balances torque and speed for a variety of workshop and on-site jobs. The drill accepts bits in a 1.3 cm (13 mm) chuck and achieves drilling depths up to 3.5 cm in wood, making it suitable for common fastening and light to moderate drilling operations.

Advantages

The tool offers adjustable speed control and a reverse function to adapt to different materials and fastening needs. Its pistol grip design provides ergonomic handling and improved control during prolonged use. The cordless configuration ensures portability and freedom of movement while the 18V battery platform delivers consistent power and runtime for continuous work cycles.

Suitable for

Key specifications

How to use

Fit an appropriate drill or screwdriver bit into the 1.3 cm chuck and tighten securely before operation. Select the desired speed setting according to the material and task, and use the forward/reverse switch to drive or remove fasteners. Position the drill perpendicular to the work surface for straight holes and apply steady, even pressure while allowing the tool to reach working speed. For repeated work, monitor battery charge and replace or recharge batteries as required to maintain consistent performance.

Recommendations

Use drill bits and screwdriver bits that match the chuck diameter and the material being worked. For wood drilling up to 3.5 cm, start with a lower speed and increase if necessary. Wear appropriate personal protective equipment, such as safety glasses and hearing protection, and follow battery handling and charging guidelines from the battery manufacturer.