Ingco 21mm Socket Spanner, 1/2″ Drive 6-Point HHAST12211

Our review

This is a single 21mm socket from Ingco, built for 1/2-inch drive tools such as a ratchet handle, breaker bar or impact driver. The six-point opening grips the flats of a bolt rather than the corners, which matters on rusted or rounded nuts, and the black nickel plating plus heat treatment point to a piece made to survive regular workshop use. It suits mechanics, fleet maintenance staff and serious home DIYers who already own 1/2-inch drive tools. Before buying, confirm your handle or bar is 1/2-inch drive, since a 3/8-inch tool will not fit, and check the nut size is genuinely 21mm rather than an imperial equivalent. Compare against chrome-finished sockets if you work in damp conditions, and against impact-rated sockets if you plan to use a power tool, because standard sockets can crack under impact loads. A single socket like this is a sensible way to replace a lost size or fill a gap in a set without buying a whole new kit.