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Continue to ChatKL-QB-1S-6.4-4-E - Brass, Retracted Bolt length 6.4mm, 2 Locks, Exchange Key, Castell, Q Type, KL Dual Key Interlock https://www.concretespares.ie/product/kl-qb-1s-6-4-4-e-brass-retracted-bolt-length-6-4mm-2-locks-exchange-key-castell-q-type-kl-dual-key-interlock/