One can particularly see that the two inner rollers 68 and 70 are arranged with its rotational axis substantially perpendicular to each other so that in use the disc shaped inner roller 68 contacts the lateral legs 52 of the C shaped {TAIL ~ handrail} 10 while the other inner roller 70 which has the form of a cylindrical roller, contacts the web 54 between {HEAD ~ the legs} 52 
One can particularly see that the two inner rollers 68 and 70 are arranged with its rotational axis substantially perpendicular to each other so that in use the disc shaped inner roller 68 contacts the lateral legs 52 of the C shaped { TAIL ~ handrail } 10 while the other inner roller 70 which has the form of a cylindrical roller , contacts the web 54 between { HEAD ~ the legs } 52
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH