Vintage Metrinch 1/2″ Drive Master Socket Set in Moulded Storage Case High-quality vintage Metrinch 1/2″ drive socket and ratchet tool set in its original black blow-moulded carrying case. Metrinch’s patented socket design grips on the flat sides of hex fasteners rather than the corners, allowing a single socket set to fit Metric, SAE (AF), BSW, and BSF bolt sizes while preventing rounding of damaged nuts. 5,219,392. Fits: MM (10mm to 32mm range), A/F (Imperial), BSW, and BSF fasteners Condition: Used workshop clearance set in overall good clean condition. Sockets and drive tools show normal light surface wear, minor cosmetic marks, and patina from use. Moulded case and interior guide diagram intact as pictured. LOCATION: Accrington, BB5 5HU.