Improved spring mechanism. Support rail folds up against wall when not in use. Larger diameter(1 1/4") rail provides a secure grip. Rail attaches to a plate that is fixed to the wall. Spring mechanism reduces effort required to lower and raise rail and holds rail up securly out of the way when not needed. 30" long rail is epoxy-coated steel tube. Hardware not included. Reccommended installation by a qualified professional. Does not include toilet roll holder.