10Pcs Mini Drill Chuck Adapter Set 0.5-3.2mm Brass Collet For Dremel Rotary Tool
10pcs Mini Brass Copper Collets Chucks for Twist Drill Motor Shaft Electric Grinder Rotary Tool. Corresponding to the inner hole of the spindle of the machine: 4.4mm. Material: Brass. Size: the end of the sandwich is clamped directly: 4.3mm.