elastic steel ER Collet 1.Material: 60Mn 2.Accuracy:0.005mm 3.Power clamping ... etc.5.Models: ER8, ER11,ER16,ER20,ER25,ER32,ER40,ER50.6.Packing: inner packing is plastic or paper box, the ... suplly various machinery accessories such as Er collet, Sealed collet, Tap collet, R8 collet, 5C dollet, OZ collet, tool holder etc.If you need more ... free to contact us.skype id: rosewicker elastic steel ER Collet