Heavy Duty Universal Mobile Base BORA Portamate PM-2500. A Tough, Fully Adjustable Mobile Base for Mobilizing Large Tools, Machines and other Applications 650 lb. capacity - its a true heavy duty adjustable universal mobile base Ideal for large, unwieldy machines and tools - Table Saws, Band Saws, Planers, Jointers, Shapers, Spindle Sanders, and most other stationary power tools Also perfect for larger cabinets, toolboxes, safes, gun cabinets, and much more Foot operated steel locking levers with 3 inch non-marring ball bearing wheels and casters Glides effortlessly, and locks down rock solid with a quick press Low profile, only increasing machine height one inch Adjusts in one inch increments - 12 x 12 inches to 36 x 36 inches square, or up to a 20 x 52 inch rectangle For items that need a larger footprint the K1218 accessory rail kit is available. The kit includes 2 x 18in rails and 2 x 12in rails with necessary hardware