Heavy Duty Diamond Core Drill Bit For Concrete And Masonry, Four Inch Size With One Quarter To Seven Inch Thread, Laser Welded Segments And Extra Long Seventeen And Three Quarters Inch Drilling Depth, KELINER Professional Grade Core Bit For Concrete

Single 4-Inch Diamond Core Bit for Deep Concrete Drilling
✔️ 4 in dia, 17.75 in long, 15.7 in depth, 1-1/4-7 thread

This heavy-duty diamond core drill bit is built to cut through concrete, brick, block and stone with precision. At 17.75 inches long and a maximum drilling depth of 15.7 inches, it’s perfect for long runs like installing electrical conduits, plumbing lines, and HVAC ductwork. The universal 1-1/4”-7 threaded interface fits most handheld core drills and drilling rigs, enabling quick changeovers. It’s optimized for wet drilling to reduce heat and dust, extending tool life. This is a single bit pack.

✅ Cutting Diameter: 4 inches
✅ Length: 17-3/4 inches
✅ Maximum Drilling Depth: 15.7 inches
✅ Interface: 1-1/4"-7 threaded
✅ Material: Diamond with laser-welded segments
✅ Wet drilling optimized for heat and dust reduction

💡 What is a core drill bit used for and why choose a diamond core bit? A handy tool for creating clean, round holes in hard surfaces. - Drills through concrete, brick, and stone - Handy for installing pipes, electrical conduits, and ductwork - Wet drilling reduces heat and dust, extending bit life