L 2 A 0.005 A 58-60 HRc L CSI ST-ER-M (mini) d min max DIN 6499 ER Mini Collet Chucks with Cylindrical Shanks SS D 3 J T kg Designation SS CSI d min d max L 2 L J D 3 T ST 12X 80 ER11 M 12 ER11 0.5 7.0 80.00 26.50 - 16.00 11.0 0.06 ST 16X100 ER11 M 16 ER11 0.5 7.0 100.00 18.50 M8 16.00 13.0 0.10 ST 16X150 ER11 M 16 ER11 0.5 7.0 150.00 18.50 M8 16.00 13.0 0.19 ST 22X150 ER11 M 22 ER11 0.5 7.0 150.00 18.50 M12 16.00 13.0 0.40 ST 12X 80 ER16 M 12 ER16 0.5 10.0 80.00 36.50 - 22.00 17.0 0.13 ST 20X100 ER16 M 20 ER16 0.5 10.0 100.00 25.00 M12 22.00 17.0 0.21 ST 20X150 ER16 M 20 ER16 0.5 10.0 150.00 25.00 M12 22.00 17.0 0.29 ST 20X100 ER20 M 20 ER20 1.0 13.0 100.00 40.00 M12 28.00 21.0 0.27 ST 20X150 ER20 M 20 ER20 1.0 13.0 150.00 40.00 M12 28.00 21.0 0.31 Straight & VDI Shanks 947-950 979-980 981 980 944-946 SETS A 0.005 A CSI d range KIT ST-ER-M/MF Contains ER Mini Collet Chuck * 46-48 HRc with a Cylindrical Shank and a Set SS ** 58-60 HRc of Collets in Various Bore Sizes Designation SS CSI d Range Qty KIT ST12X80 7 ER11 M 12 ER11 0.5-7 7 KIT ST12X80 10 ER16 M 12 ER16 0.5-10 10 KIT ST16X50 7 ER11MF 16 ER11 0.5-7 7 KIT ST16X100 7 ER11 M 16 ER11 0.5-7 7 KIT ST16X150 7 ER11 M 16 ER11 0.5-7 7 KIT ST20X100 10 ER16 M 20 ER16 0.5-10 10 KIT ST20X150 10 ER16 M 20 ER16 0.5-10 10 KIT ST20X100 12 ER20 M 20 ER20 1-12 12 KIT ST20X150 12 ER20 M 20 ER20 1-12 12 • F suffix indicates a flat on the shank. • Each kit contains one collet chuck, a full set of ER collets and a wrench. * Collet ** Toolholder 920 ISCAR