Mounting 40mm-Lock-Swivel-Caster-008 is the solution of making your project to move around by pushing. This wheel caster has a wheel diameter of 40mm or 1.575" inch in inches. The wheel has a width of 40mm=1.575" inch. The caster dimensions heightwise is 257mm/10.118" inch. Mounted via a Top Plate that has the size of 38mm x 38mm and the holes distance of 129mm x 74mm. The caster core is made of Acrylonitrile Butadiene Styrene (Plastic) and has a Acrylonitrile Butadiene Styrene (Plastic) tire with a low friction Roller bearing. Each caster will carry the load of 55 lb and is Swivel and Upper Locking type. Temperature range = -40 to 180 F. Remember, you will have to buy the 40mm-Lock-Swivel-Caster-008 in order to have it :).