Delta Diamond Cost Cutter 4 1/2 Inch Segmented Diamond Blade, 7/8"-5/8"/20mm Arbor, General Purpose Cutting/Grinding Concrete, Masonry, Stone, & Similar Materials (4.5") - DELTA DIAMOND PRODUCTS INCORPORATED, SEG-045

• STANDARD GRADE - Standard grade diamonds deliver the best combination of cutting speed and tool life at a low cost per cut. GENERAL PURPOSE - Use on a wide variety of materials such as concrete, masonry, brick, block, stone, and similar materials. USE WET OR DRY - Heat-treated high-speed steel core is durable enough to withstand dry cuts. Use with water for increased performance. SPECIFICATIONS - 4 1/2" diameter X .080 thick with a 7/8" arbor hole. Included is a 20mm and 5/8" bushing for adapting to any hand-held grinder or trim saw. The maximum safe operating speed is 13,500 RPM. LIFETIME WARRANTY - All Delta Diamond Products, Inc Diamond Blades, Coring Bits, Hole Saws and Grinding Wheels include a lifetime warranty against warping, cracking, and material defects. If any diamond tool (being used under its intended use with at least 50% wear left) fails to cut or work properly, or if the bond between the diamond segment and the steel core becomes separated at any time, the diamond tool will be replaced.