This is a Archer replacement Rim Sprocket, the size is .404" pitch with 8 teeth and is a large spline sprocket. This sprocket replaces Oregon part# 13313.
Note: These rims were mistakenly made with the wrong information inscribed on them which was removed but this has no effect on the quality of the rim.
Archer Guide Bars, Archer Chainsaw Chain and Archer Accessories are sold world wide and are known for quality products!