2-PACK! 4-1/2 Inch Professional Quality Diamond Core Bit For Wet/Dry Drilling Concrete, Asphalt, Stone Brick, Reinforced Concrete and Hard Masonry.

• Laser welded 
• Standard Segment height: 10mm (0.394”)
• All bits are 17” long to produce 16” core.
• Bits 5/8” to 1-1/2 are threaded for a 5/8"-11 adapter
• Bits1-3/4”and larger are threaded for a 1 1/4"-7 adapter.
• Applications: Brick, Concrete Block, Granite, Hard Concrete, Reinforced Concrete, Hard Masonry.
• Equipment: Handheld Core Drill or Core Drill Rig