This plastic wheel with 53 teeth restores your wheel traction, get your lawn mower self propelled function back to work,Easy to install, just put the new wheels on and bolt right up,Compatible with Husqvarna 5521 CHV, 5521 CHVX, 5521 RS, 5521 RSX, 65021 CHV, 65021 ES, 65022 ES, 67521 ES, 7021 F, 7022F, HU550F, HU550FH, HU600F, HU675FE, HU700F, HU725F, HU725FH, HU700F, 62522 FE, 62522 SH, XT721F, XT722FE etc. For more details, pls check the description part.,Replaces 532401274 401274X460 532411081 401274,Package including 2 X gray drive tires, each 8" Tall x 1-3/4" Wide :)