Magura T-Handle Torque Control Tool - with Slotted 8mm BitMagura T Handle Torque Control Tool with Slotted 8mm Bit. Magura T Handle Torque Control Tool with slotted 8mm bit. Torque limiting cam over clutch prevents over tightening of critical fasteners to protect carbon fiber and other parts at critical junctions (bar stem; stem steerer tube; frame seatpost) 1 4" hex magnetic bit shank with T25 (1" and 4" lengths) M4 (1" and 4" lengths) M5 and M6 bits Adjustable from 2Nm to 8Nm indexing at every 0. 1 (tenth)