Rollerbolt operated by push or pull from either side. Deadbolt operated by key from either side. Rollerbolt is brass and adjustable to suit either hand. Deadbolt is also brass and the throw is 16mm. The measurements are as follows: 63mm lock(A) come with 45mm(B) backset, 76mm(A) lock comes with 57mm(B) backset, 101mm(A) lock comes with 82mm(B) backset. 100 standard differs numbered 301-400. If you are choosing the master keyed lock then these are available in master, sub and grand master keyed