This is a high-quality Archer replacement drum & rim sprocket. This is a 7-tooth 3/8"LP pitch sprocket and it comes with a needle bearing. The sprocket fits the following chainsaw models: Echo CS-300, CS270, CS280, CS280E, CS2800, CS290
THIS DRUM & RIM REPLACES ECHO PART NUMBER: 175005-13931, 175005-15330
Archer Chainsaw accessories are made with quality and sold all over the world!