"Norton diamond blades offer many times the life expectancy and much faster cutting performance than standard abrasive blades, resulting in less downtime and overall cost savings. Blades feature laser welded diamond segments for long life and durability. Chopper brand is rated at 60 to 70 times the life expectancy of abrasive blades. Recommended Use Cured concrete, Arbor Size in. 1, Blade Diameter in. 18, Blade Type Segmented, Blades qty. 1, Cutting Styles Wet, Cutting Width in. 1/8."