Fits Models: Lawn-Boy M, Silver, Silver Pro and Gold Pro series; 21" self-propelled; 43 teeth on drive wheelToro 20710, 20711 and 20716; self propelled; 43 teeth on drive wheel
Specifications: Wheel Size: 8x2.25 Wheel Size 8x2.25 Hub Offset 1 3/4" Bore Size 1/2" Tread Radial43 teeth on drive wheel Material Plastic
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