TrimmerPlus AH721 22-Inch Dual Hedger Attachment for Attachment Capable String Trimmers, Polesaws, and Powerheads DOUBLE-SIDED BLADES: 22 blades with -inch gaps cut Simultaneously for ease of use in when hedging side-to-side. ADJUSTABLE ANGLES: articulating head lets you lock the Hedge trimmer blade from 0-135 degrees. STURDY CONSTRUCTION: Full metal case construction for heavy-duty use. WARRANTY: 2-year limited. COMPATIBILITY: fits Attachment capable units from Troy-Bilt, Remington, Craftsman, Cub Cadet, yard machines, yard man, Snapper, Murray, Bolens and most other major brands. Will not fit Echo PAS units. Inner coupler tube diameter: 1.65-Inches. Drive Shaft connector: Square shape, 1/5-inch, female.