Product Description: The Spalding Positive Lock Heavy Duty Breakaway Basketball Rim is a heavy duty basketball rim. The strong internal springs help prevent damage to the rim and backboard that can be caused by slams and dunks. The 4 x 5 inch bolt pattern on the Spalding Positive Lock Heavy Duty Breakaway Basketball Goal fits most basketball hoops.
Amazon.com Product Description: Designed for residential play, the Spalding Positive Lock breakaway basketball rim (model 411-519) provides high performance with a positive lock breakaway mechanism that keeps ball bearings securely in place to ensure the rim always returns to ready to play position. Other features include a continuous ram for hanging the net, included standard white net, and orange powder-coated finish. It has a 4 x 5-inch mounting pattern. It's backed by a 2-year limited warranty.