Infinitely adjustable to securely hold any wheel size Convenient easy rolling feature Thumb screws allow for tool free adjustment Wide base with triangulated arms holds bikes firmly Easy in-out for practical use Shop Rack Connectors can be used to connect up to 5 Shop Racks Approximate dimensions 22`h x 14.5`d x 17`w Steel Grey RS8601UPC/EAN/GTIN: 799403305002