9 Pcs ER32 for CNC Milling Lathe Tool 2 4 6 8 10 12 16 18 20mmSpring Collet Set. Precision Collet Spring Collet Chuck Set ER8 ER16 ER20 ER25 ER32 ER40 For CNC. ER25 1-16mm CNC Machine Milling Lathe Tool Holder 16 Pcs Spring Collet Set.