Overview Reviews Product Description Silicone coat allows the blade to slice easier through material reducing pitch and resin buildup when cutting pressure-treated lumber.Construction-grade carbide teeth deliver longer blade life.Every other tooth is thinner for faster cuts.The innovative heat vent/expansion slot design reduces vibration for longer life and straighter cuts.Plate is fully hardened to run truer, longer.18 tooth count blades are best for use with medium-thickness metals.Irwin marathon carbide corded circular saw blade, 7 1/4-inch 18t (24028). Irwin Tools Catalog Product Videos Custom Field Manufacturing country VN Product Reviews Write a Review Write a Review × Irwin 10 Pc. 7-1/4" 18T Marathon® Carbide Circular Saw Blade 24028 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *