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hugh, sears used to sell those in a set-- hollow head socket wrenches. i foolishly never bought them when craftsman was still around in quality. they are hard to locate these days and generally expensive, but i found a set of five for US$72

McMaster-Carr sells them in both inch and metric:
https://www.mcmaster.com/wrenches/socket-wrenches/?SrchEntryWebPart_InpBox=wrench


-Tony

73 Norton Interstate
72 Triumph T100R
67 BSA 441