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Continue to ChatKL-FSB-3S-12.7-4-E - Brass, Retracted Bolt length 12.7mm, 4 Locks, Exchange Key, Castell, FS Type, KL Dual Key Interlock https://www.concretespares.ie/product/kl-fsb-3s-12-7-4-e-brass-retracted-bolt-length-12-7mm-4-locks-exchange-key-castell-fs-type-kl-dual-key-interlock/