Plastic Drive Wheel / Toro 92-1042Pack Size:1Lawn-Boy 92-1042, Toro 92-1042NHC 225-1074Lawn-Boy Fits M, Silver, Silver Pro and Gold Pro series; 21" self-propelled; 43 teeth on drive wheel; Toro 20710, 20711 and 2071621; self propelled; 43 teeth on drive wheelBore: 1/2 ", Tread: Radial, Wheel Size: 8x2.25, Hub: 1 3/4 " offset, 43 teeth on drive wheel