Poulan Clutch Spider part# 11625 supersedes to part# 530-011625. This spider has 3/8" reverse fine thread for mounting. Following is a list of chainsaws that use this part; PP375, PP385, and PP395. There may be models that use this part that we do not have listed here. Please refer to your owners manual or a parts breakdown for your model, to assure that this is the correct part for your machine, before you order.