Don't think too much, use 3inch-Swivel-Caster-012 to get your DIY move and manuver around. This wheel caster has a wheel diameter of 75mm or 2.953" inch in inches. Dimensions of the caster wheel is 21mm (.827" inch). The Caster with the wheel from end to end is 93mm = 3.661" inch. This wheel caster can be mounted using a Threaded Stem with the dimensions of 65mm x 54mm and holes distance of 51mm x 38mm. The caster core is made of Thermoplastic Rubber and has a Thermoplastic Rubber tire with a low friction Plain bearing. Each caster will carry the load of 44 lb and is Swivel type. Temperature range = -40 to 180 F. Buy the 3inch-Swivel-Caster-012 now, just add the quantity to basket and click on Checkout.