Oregon 60-426 Throttle Control Universal 71-inch Deck Wheel replaces MTD 734-0973 734-973, Rider series 300, 400, 500, 600, 700, 800 (1985-1998) Replaces Murray # 92683, John Deere # AM116299, M11489 5in x 2-1/2in, Bearing ID: 1/2in Hub: Offset plastic, Hub Length: 2-1/2in Tread design is "Smooth"