Anti-kickback tungsten carbide tipped blades for recessing jointing biscuits. Features a 22mm bore x 4mm kerf, and compatible with DeWalt, Makita, Einhell, Erbauer and Triton biscuit jointers. Suitable for natural timbers, particle board and MDF. Tungsten Carbide-Tipped Teeth Suitable for Cutting Natural Timbers, Particle Board & MDF Boards Cutting Width (Kerf): 4mm ATB Profile with 18° Hook for Fast Stock Removal Precision Ground Alloy Steel Plate to Maintain Flatness Body Hardened & Tempered Reamed Bore Ensures Precise Spindle Fit Tungsten Carbide-Tipped Teeth Suitable for Cutting Natural Timbers, Particle Board & MDF Boards Cutting Width (Kerf): 4mm ATB Profile with 18° Hook for Fast Stock Removal Precision Ground Alloy Steel Plate to Maintain Flatness Body Hardened & Tempered Reamed Bore Ensures Precise Spindle Fit