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Continue to ChatKL-QB-3S-19.1-3-D - Brass, Retracted Bolt length 19.1mm, 4 Locks, Double Key, Castell, Q Type, KL Dual Key Bolt Interlock https://www.concretespares.ie/product/kl-qb-3s-19-1-3-d-brass-retracted-bolt-length-19-1mm-4-locks-double-key-castell-q-type-kl-dual-key-bolt-interlock/