http://tinyurl.com/m772u75
Snowblower Worm Gear - Replaces MTD 717-1425 & 917-1425.Product Review
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Made to Meet Or Exceed FSP Specifications.
Fits 28" & 33" width snowblowers
1-1/2" ID, 2-7/8" OD, 1/4" key, 20 Teeth, .885" Thick.
