ER Collets We can supply all kinds ER Collets , CNC tool holders. End Mills Rearmers, Carbide Rod, Drill bit. Specifications C20-(2-16)C32-(3-25)C42-(6-30)OZ25-(3-25)OZ32-(6-32)ER11(0.5-7)ER16(1-10)ER20(1-12)ER25(3-16)ER32(3-20)ER40(3-26) If you have any need,please contact us at you feel free!