Wet Diamond Core Drill Bit 8 in, 14 in Depth, 1-1/4-7

8 inch wet diamond core drill bit delivers fast, clean holes in concrete and masonry while reducing heat build-up for steadier cutting. Built with laser-welded segments on a carbon steel body, it’s designed for high-speed coring with less wobble and smoother, burr-minimized edges. The 1-1/4 in-7 internal thread fits common handheld and stand core drills for quick setup on job sites and renovations.

• Fits 1-1/4 in-7 internal thread for fast mounting on standard hand drills and stand drills


• Delivers wet-cut performance that helps control heat and friction for smoother, faster drilling


• Resists segment loss with laser welding and a durable carbon steel body for demanding coring


• Maintains accuracy with precision-ground teeth aligned to the installation axis to reduce wobble


• Handles reinforced concrete, concrete, red brick, and foam brick for HVAC, plumbing, and construction work

When your project needs a large, accurate pass-through—pipes, conduits, anchors, or HVAC lines—this wet diamond coring bit keeps cuts controlled and consistent. Use water feed where possible to improve chip removal and manage temperature during extended drilling. With its universal thread and job-ready build, it’s a practical choice for contractors and serious DIY users working on concrete, brick, and masonry. Grab yours today and keep your next installation moving on schedule.

• Bit diameter: 8 in / 203 mm


• Max drilling depth: 14 in / 356 mm


• Thread: 1-1/4 in-7 internal


• Welding method: Laser welding


• Compatible machines: Hand drills, stand drills


• Compatible materials: Reinforced concrete, concrete, red brick, foam brick


• Product dimensions: 16.34 x 7.95 x 7.95 in (415 x 202 x 202 mm)


• Net weight (incl. accessories): 14.6 lb / 6.62 kg