Spiral collets are widely used in bo, milling, drilling, tapping, grinding, and engraving, and so on. The correct methods of mounting the collet nut: Put the chuck into the pressure cap, gently turn the clamp sp, when eccentric portion of the pressure cap recessed clamp sp groove. Along the arrow direction and use equal force to push clamp sp, can mount pressure cap.Put the clamp sp and cap all together installed on the chuck body or spindle. Insert into the clamping hole after wipe the cylindrical shank, use a wrench to tighten the pressure cap, until clip firmly the tool before use. (e: Avoid fastening pressure cap that installed tool, to avoid damage the clamp sp) Use a wrench to loosen the pressure cap and took out the chuck or tool, remove the tool. Along the direction of the arrow push out the clamp sp. Then according to need replace other clamp sp. Material: 45 steel Type: ER32 Length: 40mm Diameter: 33mm Accuracy: 0.015MM Inner diameter: 2 /4 /6 /8 /10 /12 /16 /18 /20mm colour: Silver Package Contents: 9pcs Collets Only the above package content, other products are included. E: Light shooting 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. The item "2X9pcs ER32 Sp Collet Set for CNC Workholding Engraving Machine and Milling z1" is in sale since Thursday, July 15, 2021. This item is in the category "Business, Office & Industrial\CNC, Metalworking & Manufacturing\Workholding & Toolholding\Workholding\Collets\Spring Collets". The seller is "sunny-store6" and is located in Shenzhen. This item can be shipped worldwide.