Description 9pcs 2 20mm ER32 Precision Spring Collet for CNC Milling Lathe Tool Specifications Material high grade spring steelType ER32Length 40mmDiameter 33mmAccuracy 0 015MMInner diameter 2 4 6 8 10 12 16 18 20mmQuantity 9pcs Feature Available in the BT ER extension rod handle can be used for clamping drill milling cutter straight shank tool Performance stability high accuracyAdopt high grade spring steel durable and wear resistant Large holding force wide clamping range Spiral collets are widely used in boring milling drilling tapping grinding and engraving and so on Widely used in boring milling drilling tapping CNC sculpture and other processing operations also can be supported used with the holder of CNC tool The correct methods of mounting the collet nut 1 Put the chuck into the pressure cap gently turn the clamp spring when eccentric portion of the pressure cap recessed clamp spring Along the arrow direction and use equal force to push clamp spring can mount pressure cap 2 Put the clamp spring 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 Note Avoid fastening pressure cap that not installed tool to avoid damage the clamp spring 3 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 cla