Sturdy material: Made of high quality carbon steel, they are durable. They remain strong when tightened without damaging the drill bit.
Excellent CompatibilitySuitable for many twist drill bits, multifunctional drill bits, wood drill bits etc.
High Quality Design: Just tighten the screw with an allen key, can lock the drill bit more firmly, is not easy to deflect and is more stable when used.
HIGH PRECISION The drill stop clamp set will easily help you drill holes at exact depths and prevent excessive penetration of the bit.
8 DIFFERENT SIZES: Comes with 16 pieces depth stop collars and 2 pieces hex key. The diameter of the stop collar is 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 16mm. 2 pieces for each size.