elastic steel ER Collet 1.Material: 60Mn 2.Accuracy:0.005mm 3.Power ... , drilling, tapping, grinding and engraving operation etc.5.Models: ER8, ER11,ER16,ER20,ER25,ER32,ER40,ER50.6.Packing: inner ... suplly various machinery accessories such as Er collet, Sealed collet, Tap collet, R8 collet, 5C dollet, OZ collet, tool holder etc.If you need ... to contact us.skype id: rosewicker elastic steel ER Collet