MTD compatible lawn tractor mower belt tensioner pulley Outer diameter (mm): 101,6 Inner diameter (mm): 9,5 Height (mm): 30 Weight: 263 g For models: MTD 11/81 , 13/92 , 13/92 H , 13/96 , 13/102 , 115/81 , 125/76 , 125/102 ,