ITEM NAME:For 2.3mm Shaft Diameter Clamping 0.8-1.5mm Brass Motor Shaft Fixture Fu CNY Descriptio n Description: Product Name: Woodworking Brass Drill Clip Material: brass Size: 25* 8mm Rear axle diameter (with motor shaft): 2.3 mm Clamping range: 0.8-1.5mm Dimensions: Description: For 2.3mm motor shaft clamping drills 0.8 mm to 1.5 mm. Features: Concentricity adjustment method: Concentricity should be adjusted before locking. Otherwise there will be severe vibrations. Rotate on the smooth surface of the floor or glass for a while. The locking points one by one are concentric. Product list: 2.3mm drill chuck *1 small wrench *1 We offer you what you need! Mini Small 2mm Brass Electric Motor Shaft Clamp Fixture Chuck.Clamping range: 0.8-1.5mm. Mini Small 2mm Brass Electric Motor Shaft Clamp Fixture Chuck. Material: brass. Rotate on the smooth surface of the floor or glass for a while. The locking points one by one are concentric.