Jeremywell 5" (127mm) Diamond Wet Drill Core Bit for Concrete, Granite, Brick Block, #30/40 Diamond Grits, 1-1/4"-7 Threaded, Height 17"

High diamond concentration for excellent footage and drilling speed - 1-1/4"-7 Threaded Attachment Wet Drilling Applications: Drilling Soft Facing Brick, Concrete Blocks, Hard Sandstone, Coarse Sandstone, Soft Slate, Breeze Block & Drilling Lignacite Blocks. NOT FOR USE ON REBAR For use on hand held core drills and core drill stand #30/40 diamond grit, perfect designed for drilling hard concrete, masonry, hard brick, granite, and other hard materials Welding Method: High Frequency Welded