Irwin Marathon 12 In. 40-Tooth General Purpose Circular Saw Blade

Thinner kerf provides faster, cleaner, more exacting cuts.

C3 carbide tipped teeth are precision honed and impact-resistant to hold their edge longer.

Unique shoulder design puts more support behind each tooth for smoother, more exact cuts.

Specially engineered heat vents eliminate blade warping.

All except 3-3/8", 5-3/8", 5-1/2", 6-1/2", 9" and larger have diamond knockout.