ER Collets 1.Material: 60Mn 2.Accuracy:0.005mm 3.Power clamping ability 4.Hardness:HRC44-48 Products Features:ER Collet1. ... 5.Models: ER8, ER11,ER16,ER20,ER25,ER32,ER40,ER50.6.Packing: inner packing is plastic or paper box, ... in China. We can suplly various machinery accessories such as Er collet, Sealed collet, Tap collet, R8 collet, 5C ... , please kindly feel free to contact us. ER Collets Manufacture