This is a high-quality Archer replacement spur sprocket. This is a 6-tooth 3/8"LP pitch sprocket and it comes with a needle bearing. The sprocket fits the following chainsaw models: Echo CS301, CS300, CS305, CS306, CS330T, CS340, CS341, CS345, CS355T, CS3000, CS3400, CS3450, CS3350, CS3500
Replaces Oregon part# 106906X and Rotary part number 36-1627