3-1/2-Inch Laser Welded Dry Diamond Core Drill Bits for Cutting Concrete and Asphalt, 3-1/2" Diameter x 11" Length

The professional quality laser welded dry diamond core bits offers the best lifetime available on market Laser wielded Segment height 0.400" Length: 11" long to produce 10" core 5/8"-11 thread Laser welded|Segment height 0.400â|Length: 11â long to produce 10â core|5/8â-11 thread