Clamp collar to be mounted on twist drills, with lateral attachment screw, in order to adjust the drilling depth. If you don't need 10 pcs. of one size, we recommend product line 2108.505 and 2108.507. Ø 3 and 4 mm drill bits with assembled ring should be used with lower rpm than the recommended speed for the single twist drill.
skeleton crew operating until 2 january 2025 . due to high demand, don't wait until then for orders required early january.