Mounting VXB005150BCB1 is the Low cost solution of making a project to move around by pushing or pulling. The wheel diameter is 150mm or 5.906" inch in inches. The thickness of the wheel is 50mm or 1.969" inch. The Caster with the wheel from end to end is 193mm = 7.598" inch. Top Plate is the method of installing the caster to your equipment, here are the dimensions 100mm x 115mm with the holes distance of 75mm x 85mm. The weehl core material is Black Cast iron and has a Black Cast iron tire with a low friction Roller bearing. Maximum load calpacity that should not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 617 lb with a Swivel and Center Brake type. The caster temperature range = -40 to 180 F. Very important notice, you need to buy the VXB005150BCB1 in order to get one :).