The Monument 4507X GRIP+ R1 is a specialist radiator valve tail fitting tool designed for installing and removing thermostatic radiator valve (TRV) tails with precision and ease. This professional-grade tool features a 16mm internal hex socket that fits most standard radiator valves, making it an essential addition to any plumber's toolkit. Manufactured in Britain to exacting standards, this TRV tail spanner delivers reliable performance on domestic and commercial heating installations. The tool
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