5-Pack! 3-1/4 Inch Super Plus Quality, Laser Welded Diamond Core Bits For Wet/Dry Drilling Concrete and Asphalt ,Brick Stone Pavers

• Bits 5/8" to 1-1/2 have 5/8"-11 thread
• Bits1-3/4" and larger have 1-1/4"-7 thread.
• Laser welded, segment height 0.400", 17” long.