Amazon.com: 8” RB1 Cutting Blade Compatible with Ryobi AC04105 8'' Heavy Duty Reversible Steel Tri-Arc Brush Cutting Blade : Tools & Home Improvement
DEWALT Brush Cutter Attachment for String Trimmer DWOAS5BC - The Home Depot
Shakespeare Universal Fit Metal Blade String Trimmer Head for Heavy Brush and Weeds - Easy Installation - Fits Most Gas Trimmers in the String Trimmer Heads department at Lowes.com
RYOBI BRUSH Cutter Attachment w/ 8' Tri-Arc Blade -What you can Expect - YouTube
Shakespeare Brush Cutter Replacement Blades - Pack of 3 | Metal Blades for Thick Vegetation | Universal Fit String Trimmer Heads in the String Trimmer Heads department at Lowes.com