Please note this listing is for 2 PACKS / SETS. All products listed in packs are also available individually, please see our other listings or contact us. Bathroom turn and release set to compliment the Delamain door knob range. Its 42mm diameter means you can use these with the Delamain Knobs knowing that if used with a standard bathroom lock, they will fit. (the larger DK12 will not fit - use of a separate deadbolt is required) .Comes with a 10 year mechanical guarantee.Alias ID - bc06650ax2