... of special material steel:40Cr ER collet is one kind of the Spring Collet and it is usually to be ... Precision Machinery Co., Ltd can provide various kinds of ER collet, such as ER8,ER11,ER16,ER20,ER25,ER32,ER40, ... ER50 etc. The clamp force of our ER collet is big, the clamp arrangement is wide and the ... products to the customers all over the world! er collet, SK collet, collet, collets, ER spring ...