Flare nut inserts for torque wrenches with rectangular interchangeable heads; Allow accessibility to nuts attached to a hose or pipe with specific torque requirements; Sizes in metric and imperial; 9x12 Receiver; High performance alloy steel; Useful with 7435, 7465, TAWM9,14,24, TAW9,14,24 & IZO-D- torque wrenches; Sizes with * in torque length require target torque setting calculation