A professional bi-hexagon 1/2in Square Drive deep socket produced in accordance with ISO 900 and AS954 specifications for increased torque and reduced risk of rounding fasteners. Manufactured from chrome vanadium steel with a satin finish. Length: 79mm.Select Option 10mm11mm12mm13mm14mm15mm16mm17mm18mm19mm20mm21mm22mm24mm27mm30mm32mm Add to Basket Quantity