UPC 704660046889

*Includes: (3) - Power Mate Rim (Small Spline) 375 x 7 Tooth # 18720 *Genuine Oregon Replacement Part *Replaces the following part numbers: Husqvarna/Jonsered 640 20 00 36 and 608 00 00 87 *Works with many Chainsaws *Please refer to below list for compatibility. *Oregon Power Mate Rim (Small Spline) 375 x 7 Tooth. Oregon Power Mate rim sprockets for chainsaws. Rims float on the splined hub of the drum and move side to side, allowing the chain and rim to align with the bar as the chain travels around the bar’s groove. The rim gets most of the sprockets wear, and by being replaceable, it extends the overall life and value of the sprocket system. This rim has wear depth indicators which tell you when to replace your rim. Small splined rims have a sprocket bore of approximately 3/4". This rim is a .375 x 7 tooth configuration. Replaces the following part numbers: Husqvarna/Jonsered 640 20 00 36 and 608 00 00 87