Heavy-Duty Dolly (Nylon Wheels) CM04A - ideal for any workshop.
80mm Heavy Duty Nylon Wheels 12mm Bore Roller Bearings | Ross Castors Castors, Trolley Wheels & Castors Online from Ross Handling
Slide Gate Guide Roller 6" Black L Rear Post Bracket Universal Heavy Duty Adjustable Dual Nylon Rollers Gate Support Assembly for Sliding Rolling Gates – Eagle Guide Rollers EG113 : Amazon.co.uk: DIY
Garage Door 2 Nylon Roller / Wheel / HEAVY DUTY 13 Ball SEALED Bearing 7 Stem - Etsy UK