25mm-73mm 1/4" 3/8" 1/2" socket adapter and 1/4 3/8 1/2 Drive Socket Wrench Adapter Converter, hexagonal, general specifications edge 6.35mm 1/4, /2"（12.5mm），3/8"（10mm），1/4"（6.3mm）connector. This set allows you to mix and match drive sizes for your sockets, ratchet handles, extension bars and other accessories.
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