Abstract: Wrench socket assembly for holding wrench sockets with their drive or wrench handle-engaging ends up, each socket being tightly held by and swivelable relative to an elastomeric ball received in and of somewhat greater cross-sectional area than its nut or work-engaging opening, the balls being molded on and, when worn, discardable with studs releasably mounted upright on a supporting surface of a holder and being arranged in the holder in seleted size sequence, and the size and shape of the work opening of each socket being anodized or otherwise imprinted on its drive end.