CAUTION: Please LUBRICATE THE BLADE before your first use; COMPATIBILITY: Fits power head units from Troy-Bilt, Remington, Craftsman, Yard Machines, Yardman, Snapper, Bolens, Murray, Ryobi, Greenworks, Kobalt and most other major brands; DRIVE SHAFT CONNECTOR: Square shape; Power head coupler accepts 1 In. Diameter tube; POWERFUL BLADE: This Hedge Trimmer Attachment has 16 In. Dual-action blade delivers powerful trimming with a 0.75 In. Cutting capacity to tackle any hedge size that comes your way; HIGHLY ADJUSTABLE: Articulating Hedge Trimmer Attachment lets you lock the hedge trimmer s blade from 75 to 90 ; Which helps in your lawn, garden,and more hedging projects; It also gives you a good storage option; EASE OF USE: No more climbing with a 37 In. Long hedge trimmer attachment; Connect, lock, and get to work;