Heavy Duty Platform dolly 18″ x 30″ that is made entirely of 4/4 oak. This dolly is a beast and can handle whatever capacities that are required for your jobs. The inset picture has 3.5″ grey non-marking casters which hold 1000 lbs of capcaity, but we can easily increase that load capacity up to 5000 lbs as well as increase or decrease the sizes! Please email your requests on the capacity that you need (as well as what you are moving), and we will find you the best value option for CASTERS and SIZING.