Flat Free Zero-Turn Lawn Mower Smooth Tread Tire Assembly with Universal Kit;13X5.00-6 ZT, Fits for most zero-turn lawnmower brands; Fits 3/4 in. axle size; 3/4 in. bushings installed; Universal adapter kit with the smooth tread tire assembly includes four washers and four spacers; Flat free tires with a smooth tread pattern.