Check size of hole in door before ordering. These fit 13+mm. Ordered this set of 4 to replace a broken roller at the bottom end of the shower door. The components seemed to be relatively good quality considering its all mainly plastic but the hole in the glass door was smaller 10mm. Requested a replacement for the correct size which they didn't have so got a refund. Good prompt replies from seller and got it sorted quickly.
Would be good if seller advertises hole size wheels fits into.