Rugged die cast aluminum housing, durable and long lasting. Twin hammer impact mechanism delivers a max torque of 720NM. Features a forward/reverse regulator with five speeds, allowing you total control. Set complete with 8 impact sockets 12, 13, 14, 15, 17, 19, 22 & 24mm. Tidily Presented in blow moulded case. A must tool for general garage, workshop and DIY use. Specifications: Item Name: Professional 1/2 Inch Air Impact Wrench Set Square Drive Size: 1/2" Free Speed: 7500 r.p.m Bolt Capacity: 18mm Max Torque: 720Nm(530ft.lbs) Hammer Mechanism: Twin Hammer Air Inlet Size: 1/4" Air Hose Inner Diameter: 10mm Air Pressure: 6-8kg/cm2 Impact Sockets: 12, 13, 14, 15, 17, 19, 22 & 24mm Spindle Length: 1" Net Weight: 2.6kg Kit including: 1 x 1/2" Drive Heavy Duty Impact Wrench 8 x Impact Sockets 1 x 5" Drive Extension Bar 1 x Oil Pot 1 x Hex Wrench 1 x 1/4" BSP Air Inlet Adaptor 1 x Plastic Case 1 x User Manual