DMI® Walker Ski Glide Attachments Fit 7/8" and 1" Diameter SKU: 510-1031-0000 Pinit $29.68 Quantity discounts available QuantityPrice -+ Add to Cart SpecificationsEasily adjustable from 3 to 5 feet with push-button lock mechanism; see measuring instructions before ordering Each ramp can support up to 330 pounds for a total of 660 pounds between them Ramps are lightweight (6 pounds each) and portable in a convenient nylon storage bag; great for travel Inside track area: 4 inches wide Retracted size: 6.5 x 29 inches Easy to assemble with no tools1-Year Limited WarrantyUPC: 041298010319