10-Pack DPT 2 1/4 Inch Wet Diamond Core Drill Bit Hole Saw for Concrete and Asphalt, 2-1/4" Diameter x 16" Length

The Super-Plus quality wet diamond core bits offers the best lifetime available on market Laser welded Segment height 0.400" Length: 16" long to produce 13" core 1-1/4"-7 thread