Drive: 1/2” Square Drive Size: 21mm Hardened Chrome Molybdenum socket Used with impact tools. Six-point socket is externally and internally sleeved to prevent damage to alloy wheels and nuts. Colour coding assists ease of size selection. Alloy wheel impact sockets have thin walls and can only be used at low torque. These are classed as a consumable and do not carry a warranty. Ideally should be tightened using a torque wrench.
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