Oregon 108565X Power Mate Rim Sprocket System, 3/8-7 Sd7

Pitch: 3/8", Size: Standard 7 Spline, Tooth Count: 7
Two-piece design includes a drum with a replaceable rim, allowing rim to be replaced multiple times before the entire unit is replaced
Extend operational life by maximizing chain and bar groove alignment
For best performance, replace every three rims

The 108565X Power Mate Rim Sprocket System includes a 3/8" pitch, standard 7 spline (SD7) rim sprocket that can be used on all types of chainsaws. This sprocket system allows you to extend operational life by maximizing chain and bar groove alignment, all while reducing your overall costs. The sprocket system'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.