Goplus Inground Solar Swimming Pool Cover Brand new and good quality;Stainless steel frame construction Easy to assemble and storage, little assemble required;Fit in-ground pools 13.7' ft - 15' ft long Ergonomically shaped crank arm helps in rolling and unrolling the cover;Solar cover rolls up safely on a 3 1/4" diameter tube Diameter of casters: 7.8"; Diameter of hand wheel13" ;Thickness of tube: 1.1 mm Package includes: 7*Section Tube, 8*Straps ,2*Base, #5 hand wheel, 2* #15 casters, Screw package