FAMAG Depth Adjusting Collars 10pcs in Plastic Tube

Clamp collar to be mounted on drill bits, with lateral attachment screw. For fixing on drill bits to adjust the drilling depth. If you don't need 10 pcs. of one size, we recommend product line 2108.505 und 2108.507. Tool steel Ø 3 and 4 mm drill bits with assembled ring should be used with lower rpm than the recommended speed for the single drill bit