Product descriptionStep wrench sizes 3/8 "(9.6 mm) / 29/68" (11.6 mm) / 1/2 "(12.6 mm) / 21/32" (16.4 mm) / 27 / 32 "(21 mm) with 1/2" drive made of high quality CRV steel. It has a cut on both sides for studded screw connections.Step wrench for screw fittings YT-03317 is used for mounting:connectors with external thread (nipple)heating valveslower cut-offs on the return of radiatorsvalve extensionsPurpose / applicationThe step wrench YT-03317 is used for mounting:- connectors with external thread (nipple)- heating valves- lower cut-offs on the returns of the radiators- valve extensionsParametersMaterial: CrVConnection size: 1/2 "
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