Adjustable Universal Mobile Base Bora Portamate PM-1000. Move Your Heavy Tools and Equipment around Your Shop with Ease and Stability An adjustable universal mobile base for machines and equipment. Very low profile - increases machine height by less than 1 Inch. 3" Hard Rubber Wheels for easy gliding. 400 lb. capacity. Base expands from 12 x12 to 32 x 32 inch square, or up to a 17 x 48 inch rectangle. Locking foot levers for ease of use. Instantly go from stable to mobile. An adjustable universal mobile base for machines and equipment. Very low profile - increases machine height by less than 1 Inch. 3 Hard Rubber Wheels for easy gliding. 400 lb. capacity. Base expands from 14x14 to 31x31 inch square, or up to a 14x43 inch rectangle. Locking foot levers for ease of use. Instantly go from stable to mobile. 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.