10-Pack 2-1/2-Inch Laser Welded Wet/ Dry Diamond Core Drill Bits for Cutting Concrete and Asphalt, Professional Quality, Fast Drilling, 2-1/2" Diameter x 17" Length

The professional quality wet/ dry diamond core bits offers the best lifetime available on market, fast drilling for concrete and asphalt Laser wielded Segment height 0.400” Length: 17” long to produce 13-1/2” core 1-1/4-7 thread