Description: 6pcs ER32 Spring Collet Set 1/8 Inch to 3/4 Inch Chuck Collet for CNC Milling Lathe Tool These are precision collets for professionals and hobbyists demanding ease of operation and high quality work results. ER collet is the most widely used clamping system in the world used for a variety of machining applications including boring, milling, reaming, tapping and grinding. Collet must be assembled into the clamping nut before inserting into the chuck. Specification: Type: ER32 Material: High Grade 45 Carbon Steel Size:40 x 33mm Clamping Diameter: 3mm(1/8") / 6mm(1/4") / 10mm(3/8") / 13mm(1/2") / 16mm(5/8") / 19mm(3/4") Quantity: 6pcs Features: Performance stability, high accuracy. Built in self-Release design and tools will never get stuck in holder. The collet is a mounted on the drilling machine drill chuck, ER collet available in an extended rod BT ER handle, used for clamping drill, milling cutter, such as parallel shank tools. 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 groove. 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 clamp spring. Then according to need replace other clamp spring. Package Included: 1x Set (6pcs) ER32 Spring Collet More Details: