Plumbing Supplies
8pcs/4pcs Diameter 23/25mm Plastic Adjustable Double Swinging Pulley Wheel Shower Cabin Sliding Door Hardware Cabinet Roller(4pcs,19mm)
Wheels Wheel
https://www.bizrate.co.uk/plumbingsupplies/8pcs-4pcs-diameter-23-25mm-plastic-adjustable-oid40391013482.html