Minimization of possible untoward effects on operator by installing VXB20050HL just ask your operator to push and pull, but not carry. The wheel diameter is 50mm or 1.969" inch in inches. The wheel has a width of 50mm=1.969" inch. The Caster with the wheel from end to end is 62mm = 2.441" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 42mm x 42mm and holes distance of 129mm x 74mm. Low drag was achieved by a Polyurethane core on a Polyurethane tire spinning freely with a Roller bearing. Maximum load calpacity that should not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 66 lb with a Swivel type. Temperature range is -40 to 180 F. Buy the VXB20050HL now, just add the quantity to basket and click on Checkout.