Chainsaw Power Mate Rim Sprocket System, 3/8"-7 Standard 7 (Discontinued)

The Oregon 29313X Rim Sprocket System includes a 3/8" pitch standard 7 spline (SD7) sprocket that can be used on all types of chain saws. This sprocket allows you to extend operational life by maximizing chain and bar groove alignment, all while reducing your overall costs. The sprocket's two-piece design includes a drum with replaceable rim, allowing the rim to be replaced multiple times before the entire unit is replacement. This sprocket should be replaced every rims. Fits Chainsaw Models Echo - CS-650|Echo - CS-660|John Deere - 65EV