8 inch pole saw power head attachment for models 2300402, 20672, and 20302 | Easy adjust chain tensioning system for quick tightening of the chain | Automatic oiler applies oil to bar and chain when needed to ensure durability and optimal use with a translucent oil tank for clear view of oil level | Easy adjust chain tensioning system for quick tightening of the chain | Genuine Greenworks replacement part | REPLACEMENT ATTACHMENT ONLY. CONTROL HANDLE AND TOOL NOT INCLUDED