Details
Air-Cooled 4-1/4" Dry Diamond Core Drill Bit for Brick and Block.
Supreme quality diamond bits are preferred by professional contractors and are designed for medium to large sized jobs where cost per hole is important.
All air-cooled dry bits come with a built-in 5/8"-11 head. Drill depth is 10 inches.
The Supreme bits have a greater amount of diamond segments than the Premium, which provide faster cutting and longer life.
Special lengths are available and can be shipped within 3 working days.