2 x Twin Shower Door Rollers/Runners/Wheels 19.5, 23, 25 or 27mm dia K049

Choice of 19mm, 23mm, 25mm or 27mm. Shower Door Rollers. Set of 2 rollers supplied. Shower Part Ltd. Inside wheel to face of glass: 10.5mm. We would require photo evidence of the issue so that we can investigate each case and log any problems.