ST - ER COLLET CHUCK A ➚ A .00020 58-60 HRc Ra 4µin L1 L Ref (1) D1 D J T Designation Range L1 L J D1 D T** ST3/4X2.00 ER25F* .041-.632 2.000 1.732 M12 .750 1.654 1.102 ST3/4X4.00 ER25 .041-.632 4.000 1.772 M12 .750 1.654 1.102 ST3/4X2.00 ER32F* .080-.789 2.000 2.126 M12 .750 1.968 1.417 ST1X2.00 ER32F* .080-.789 2.000 2.087 M16 1.000 1.968 1.417 ST1-1/4X2.375 ER32F* .080-.789 2.375 2.087 M18 1.250 1.968 1.417 ST1-1/4X6.00 ER32 .080-.789 6.000 2.047 M18 1.250 1.968 1.417 ST1X2.37 ER40F* .120-1.025 2.370 2.362 M16 1.000 2.480 1.772 ST1-1/4X2.37 ER40 .120-1.025 2.370 2.362 M18 1.250 2.480 1.772 * With a flat ** Wrench size 826