TrimmerPlus Pole Saw Attachment has an 8″ bar with automatic oiler that cuts logs up to 8″ diameter. Narrow radius bar and chain for reduced kickback and operator safety. Extension boom for 11′ reach. Attachment must be used with select split boom MTD gas trimmers. Connects to all attachment-capable Troy-Bilt, Remington, Yard Machines, Craftsman, Bolens, Hyper Tough, Snapper and Cub Cadet string trimmer power heads that accept TrimmerPlus attachments. 2 year limited warranty.