Efficient VXB20040NYGB makes it feasible to pull and push items instead of transport Spinning on wheel that has 42mm diameter/1.654" inch. The wheel has a width of 42mm=1.654" inch. The Caster with the wheel from end to end is 38mm = 1.496" inch. This wheel mounting is with the dimensions of 34mm x 34mm and holes distance of 129mm x 74mm. This caster wheel core made of Nylon and has a Nylon tire spinning over Roller bearing. Having in mind that every caster wheel has the load capacity of 55 lb with a Swivel and Upper Brake type. Ambient temperature range is -40 to 180 F. FYI, you will need to buy the VXB20040NYGB in order to get one :).