Spade drill bit Bosch SelfCut Speed, diameter 20 mm, single piece

Bosch SelfCut Speed spade drill bit, 20 mm diameter, single piece — designed for fast, efficient drilling in wood and similar soft materials. The bit features a SelfCut threaded tip that feeds into the workpiece for rapid progress with reduced operator effort, and a specially shaped spade that promotes fast chip evacuation to minimise clogging. Compatible with hand-held drills and drill presses, this spade bit is intended for carpentry, installation and general woodworking tasks where quick, clean holes are required.

Advantages

The SelfCut threaded tip pulls the bit into the material, enabling high-speed drilling with minimal pressure. The shaped spade ensures rapid chip removal, reducing the risk of binding and keeping holes cleaner. A hex shank provides secure seating in chucks with quick-change adapters, improving stability during use. The single-piece construction enhances durability and reduces the number of failure points compared to multi-part designs.

Suitable for

• Drilling through soft and hard wood
• Making holes in plasterboard and light building materials
• Carpentry and joinery tasks
• Installation work for electricians and plumbers (routing cables and pipes)
• Use with portable power drills and drill presses

Key specifications

• Diameter: 20 mm
• Overall length: 152 mm
• Tip type: SelfCut threaded tip for self-feeding
• Spade shape: specially shaped spade for fast chip removal
• Shank type: 1/4-inch hex shank
• Suitable materials: wood (soft and hard), plasterboard, light building materials
• Quantity: single piece

How to use

Secure the 1/4-inch hex shank in the drill chuck or quick-change adapter and set the drill to an appropriate speed for the material. Position the SelfCut tip on the intended drilling point and apply steady axial pressure; the threaded tip will pull the bit into the workpiece. Maintain a consistent feed rate and clear accumulated chips from time to time if drilling deep holes. For thicker or harder material, reduce speed and avoid excessive lateral forces to prolong bit life.

Usage recommendations

Use appropriate safety equipment including eye protection and gloves. Match drill speed to material hardness — higher speeds for soft wood, lower speeds for hardwood and plasterboard. For best results, remove the bit periodically to clear chips when drilling deep holes and store the bit in a dry place to prevent corrosion.