Wera Tools - 7774/2 Bit adapter insert, 5/16", 9x12 mmBit adapter insert, 5 16""; for torque wrenches of the Click Torque X series with 9x12 mm holder. Features Square insert tool 9x12 mm For torque wrenches of the Click Torque X series with 9x12 mm holder Suitable for 5 16"" DIN ISO 1173 E 8 hexagon insert bits and Wera Series 2. With safety pin The chrome vanadium steel version makes the plug in tools suitable for heavy loads Data Sheet (PDF)