FITS ANY STANDARD TOP SUPPORT POLE 35mm to 38mm: Fits any standard Top support pole: (35mm-38mm) or 1 3/8' Specifications: Specifications: Overall Length: 18'. Adjustable Latches Width: Slides 5.5' wide (min) to 14.5' wide (Max) (on latch center). Heavy Duty Steel Gauge: 2.0mm Thick. Weight Capacity: 200 Pounds (each). Gross Weight: 3 Pounds (each) / 6 Pounds (Pair) 1-YEAR WARRANTY FOR A RISK-FREE INVESTMENT - Our cushioned piano genuine leather seat comes with an exclusive, hassle-free 30-day money back guarantee and a premium 1-year warranty! In the improbable case that you are not absolutely thrilled with our elegant and comfy keyboard genuine leather bench, all you have to do is contact us within 30 days to send the item back for a refund.