Wall mounted Handrail (50mm or 53mm dia Mopstick) is available in the following lengths:-
1.0m Long, 1.2m long, 2.0m long, 3.0m long, 3.6m long and 4.2m long.
If you are buying the standard 50mm dia Mopstick Handrail for the wall, you may be interested in the kits, which come with Handrail Brackets and Endcaps
Overall handrail dimensions. 50mm or 53mm dia