The Delamain DK12 Large Bathroom Turn & Release Polished Brass is designed  for use with any Delamain knob set or independently, it has a 5mm square spindle and will operate on a bathroom lock or a separate bathroom deadbolt. Other Variations The turn & release is also available in the following finishes: Florentine bronze Polished chrome Satin chrome Some of these variations can be found in the related products. Emergency Release Function The external rose which is fitted to the outside of the bathroom has a cross slot which can be used to release small children or an...