... with Nc shank. As a speciallized manufacturer of ER collets, QuFu ChongDe Precision Machinery Co.,Ltd has ... many years mature experience on how to make ER collets.We choose the high grade spring ... Machinery Co., Ltd can provide various kinds of ER collet, such as ER8,ER11,ER16,ER20,ER25 ... demands of different customers. More information about our ER collets, please visit our website www.qufuchongde.cn ...