Bosch Professional SDS plus-4C Flat Chisel - 20 x 140 mm

This chisel is specifically designed for use on hard materials like concrete and brick. It is also effective for removing plaster and tiles.

Yes, you need an SDS plus hammer drill. It can be used with SDS plus chisel attachments or directly in SDS plus hammer drills that have a rotation stop function.

The 20 mm flat cutting edge is optimized for efficient material removal, making it ideal for demolition, breaking up concrete, and removing plaster or tiles.

A flat chisel, like this one, is designed for wider surface removal and controlled cutting, whereas a pointed chisel is better for breaking hard materials or precise starting points.

While it can perform some adjustment work, its primary design is for aggressive material removal. For fine finishing, other tools may be more suitable.

The total length of the Bosch Professional SDS plus-4C Flat Chisel is 140 mm.

Keep the chisel clean and dry after use, and store it properly. Regularly inspect the cutting edge for wear and replace or sharpen as needed.

Ensure the SDS plus chuck is clean and free of debris. Pull back the chuck sleeve, insert the chisel shank fully, and release the sleeve until it clicks. Verify the chisel shank is not damaged.

Check that the hammer drill is set to the correct chiselling mode (hammer only, no rotation). Ensure the chisel is properly seated in the tool. Inspect the cutting edge for wear or damage; sharpen or replace if necessary. Clean any build-up from the cutting edge.

Ensure the chisel is correctly seated and the hammer drill is functioning properly. For some tasks, reducing the striking force or angle might help. Check for any damage to the chisel or the hammer drill's chuck mechanism.