BOSCH GSB 21-2 RE

Bosch GSB 21‑2 RE

The Bosch GSB 21‑2 RE is a high‑performance professional impact drill designed for demanding drilling tasks in masonry, metal and wood. Its dual‑gear system, strong motor and durable metal housing make it suitable for construction, installation and workshop environments where high torque and reliability are essential.

Key Features:

• High‑torque motor: Engineered for heavy‑duty drilling and stirring applications
• Two‑speed gearbox: Provides optimal torque in first gear and high speed in second gear
• Anti‑rotation safety clutch: Protects the user and tool if the bit binds
• Metal gear housing: Ensures long service life under continuous load
• 13 mm keyless chuck: Allows fast and secure bit changes
• Variable speed trigger: Enables controlled drilling starts
• Forward and reverse operation: Suitable for drilling and screwdriving
• Auxiliary handle: Improves control during heavy drilling
• Depth stop: Allows precise, repeatable drilling depths

Technical Specifications:

• Rated input power: 1100 W
• No‑load speed: 900 rpm in first gear, 3000 rpm in second gear
• Impact rate: 15300 bpm in first gear, 51000 bpm in second gear
• Rated torque: 9.6 Nm in first gear, 3.2 Nm in second gear
• Max torque: 40 Nm
• Chuck capacity: 1.5 to 13 mm
• Drilling capacity in steel: 22 mm
• Drilling capacity in concrete: 16 mm
• Drilling capacity in wood: 40 mm
• Weight: 2.85 kg
• Dimensions: 363 × 81 × 220 mm

Included Accessories:

• Carrying case
• 13 mm keyless chuck
• Auxiliary handle
• 210 mm depth stop

Alternative: Bosch GSB 19‑2 RE

A slightly lighter dual‑gear impact drill offering strong performance for general professional use.

An introduction to percussion drills: A percussion drill has a hammer action and drill driver function enabling drilling into concrete and brick as well as wood, metal or plastics. Percussion drills are mains powered; combi drills are their cordless equivalent. Percussion drills are sometimes known as impact drills. A percussion drill differs from a hammer in that it does not have an SDS tool holder. Click here to see all our drills

To choose between percussion drills: The key consideration when choosing a percussion drill is the maximum drilling diameter required. 13mm refers to maximum drilling diameter in concrete & brick. You can use a larger drill bit for metal, plastic & wood (& some machines allow this in concrete & brick too) providing it has a 13mm or smaller diameter shank to fit the chuck. A keyless chuck is tightened by hand. Click here to see all our percussion drills

To make sure you've got the right percussion drill - 13mm keyless chuck: There is often a choice between single or 2 speed gears. Most percussion drills have a variable speed function. Click here to see all our percussion drill - 13mm keyless chuck