Features: 100% brand new and high quality. Stable performance, high machining accuracy. High strength, good toughness, strong shock resistance. Easy operation, high quality processing effect. Collet must be assembled into the clamping nut before inserting into the chuck. Specification: Collet Chuck Model: R8-ER32 Material: Metal Size: 16cm/6.3 inch R8 spindle Drawbar thread: 7/16 ER32 clamping range :1-20mm Suitable For: R8 dedicated machine ER32 Spring Collet Set Material:high grade spring steel Color: Steel color Type: ER32 Length: 40mm Diameter: 33mm Inner diameter: 3mm(1/8 )/6mm(1/4)/10mm(3/8)/ 13mm(1/2)/16mm(5/8)/19mm(3/4) Package Weight: 1733g (approx.) Package List: 1 x Collet Chuck 6 x Spring Collets