Oregon 22273 Power Mate Rim, 3/8" Pitch 8-Tooth Standard 7 Spline Type_21LGX Pro-Master is a tough

Pro-Master is a tough

Oregon's dressing brick keeps grinding wheels at the correct shape

Note: Spark Arrestor not inlcuded in PCW5000 models and kits

It remains firm

Hard anodized for durability

Oregon 22273 Power Mate Rim, 3/8" Pitch 8-Tooth Standard 7 Spline Type_21LGX Pro-Master is a toughPower Mate Rims are preferred by most professional chain saw users. The rim "Floats" on the spline and allows the saw chain and rim to align with the groove of the guide bar extending the operational life of the Sprocket. This rims is equipped with wear depth indicators, which make it easy to tell when the sprocket should be replaced.