Mounting VXB20050ALT--R is the economoical solution of building project to move around by pushing or pulling. Spinning on wheel that has 50mm diameter/1.969" inch. The wheel has a width of 50mm=1.969" inch. The Caster with the wheel from end to end is 257mm = 10.118" inch. Mounted via a that has a size of 47mm x 47mm and the holes distance of 129mm x 74mm. The Roller bearing design will enable the Acrylonitrile Butadiene Styrene (Plastic) tire to roll easily with a core made of Acrylonitrile Butadiene Styrene (Plastic). Maximum load calpacity that could not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 77 lb with a Swivel type. The Temperature range is -40 to 180 F. Order the VXB20050ALT--R now, just add the quantity to basket and click on Checkout.