Steel Dragon Tools 85D with 1.5" 2" 4" 4.5" 5" Dry Diamond Core Drill Bits Drills up to 5-inch holes in concrete, asphalt, block, brick, and more. Motor: 2,000 W, 115 V, 60 Hz, 2,000 RPM Includes 3-piece dry masonry core drill bits. Drill Bits: 1-1/2 in. x 6 in., 2 in. x 6 in., 4 in. x 6 in., 4-1/2 in. x 6 in., and 5 in. x 6 in. Carrying cases for core drill and bits are included.