Pinion Gear / Toro 39-9160Pack Size:1Toro 39-9160Edgewater 337405, Green Line 18325, J. Thomas TO-738, NHC 274-5346, Oregon 51-013, Prime Line 7-05292, Rotary 8207Toro 21" commercial self-propelled walk behinds 1/2" ID, 15 tooth gear, Use with Toro 12-6659 shaft assembly