For -ups on CNC machines High-quality, sturdy and high abrasion resistance For CNC Lathe Engraving Machine and practical to use colour:Silver Material:High speed steel size:about 45 x 65mm Package Contents: 1 x ER-32 Square Collet Chuck 1 x ER-32 Hex Collet Chuck Only the above package content, other products are not included. Note: Light 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.