"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. Charger blades are manufactured with a higher concentration of industrial-quality diamonds to assure top performance with every cut. Each blade has a 1in arbor. Dry blades intended to be used dry or wet wet blades intended to be used with water as a coolant. Charger brand rated at 100 times the life expectancy. Cutting Styles Wet, Recommended Use Cured concrete, hard material, Cutting Width in. 1/8, Blade Type Segmented, Blades qty. 1, Arbor Size in. 1, Blade Diameter in. 18."