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Continue to ChatKP1-FSB-0-FR-1 - 2NC/1NC, Brass, Retracted Bolt length 0mm, Front Entry, Castell KP Bolt Interlock With Safety Switch https://www.concretespares.ie/product/kp1-fsb-0-fr-1-2nc-1nc-brass-retracted-bolt-length-0mm-front-entry-castell-kp-bolt-interlock-with-safety-switch/