S/ER-M ER Collet Nut Wrench (DM-074) Properties and application: ER collet nut wrench Specifications: ModelB[mm]L[mm]For nuts S/ER8M 7,5 70 ER8-M S/ER11M 11,0 90 ER11-M S/ER16M 15,0 110 ER16-M S/ER20M 19,5 120 ER20-M S/ER25M 25,0 130 ER25-M