The three-jaw chuck can firmly fix the round shank drill bit; All-aluminum fuselage and detachable connecting rod Used for punching holes on electric mill, which can be operated with one hand in narrow space. to convert cordless electric screwdriver into drill or grinder; Keep your work moving; Very suitable for putting in the tool cabinet. the chuck can be used with drills from 0.3mm to 3.4mm, making it perfect for fine drilling that is not possible with standard chucks Name: Three-claw drill holder set with round handle Clamping range: 0.3mm-3.4mm Size of shank diameter: 2.35mm,3mm. Colour:silver Material:Aluminum alloy + high carbon steel Package Contents: 2 x Three Claw Drill Clamp Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.