• Fully-welded 1/4" rim support • High tensile strength 5/8" steel ring provides 50% greater bend resistance • One-piece continuous net attachment system • Low-maintenance breakaway mechanism enclosed by Bison’s exclusive padded coverplate • Six-point lubrication system (grease injector included) • Backplate fits all hole patterns on 42" and 48" rectangular and fan-shaped glass backboards • Includes hardware and anti-whip net • Five-year limited warranty