Makita D16966 3-1/4" Double Edged Tungsten-Carbide Planer Blades (793322-2) - 2 per Package PLANER BLADE MINI CARBIDE ST 3-1/4" planer blades. Set of double-edged reversible carbide blades For use with Makita model No. N1900B and 1902X7 planers.