10pcs0.5-3.2mm Drill Chucks Collet Adapter Quick Chuck Rotary Tool

0.8mm copper chuck can clamp range: 0.6-0.9mm.0mm copper chuck can clamp range: 0.8-.1mm.2mm copper chuck can clamp range.0-.3mm.5mm copper chuck can clamp range.3-.6mm.8mm copper chuck can clamp range.6-.9mm.