Wet Diamond Core Drill Bit 3 In, 14 In Depth, 1-1/4-7

Diamond core drill bit 3 inch helps you cut clean, accurate holes in reinforced concrete and masonry with less wobble. Built for wet drilling, it manages heat and friction to keep cutting performance steady on longer jobs. A universal 1-1/4 in-7 internal thread mounts quickly to compatible hand drills or stand drills for fast setup on-site. Laser-welded construction and precision-ground segments support smooth entry and burr-reduced edges.

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


• Delivers 3 in / 76 mm hole diameter with up to 14 in / 356 mm max drilling depth


• Reduces heat buildup with wet-cut use to improve speed, control, and service life


• Maintains stability with precision alignment to help resist wobble at high RPM


• Handles reinforced concrete, red brick, concrete, and foam brick for versatile jobsite use

Designed for contractors and serious DIY users, this wet diamond coring bit supports repeatable results in common installation work—HVAC pass-throughs, plumbing runs, railing posts, and general construction drilling. The carbon steel body and laser welding help keep segments secure under load, while the precision-ground cutting edge aims for cleaner hole walls and easier follow-on fitting. Use with water for optimal performance and tool life. Grab yours today and keep a reliable core bit ready for the next concrete or masonry cut.

• Type: Wet diamond core drill bit


• Diameter: 3 in / 76 mm


• Max drilling depth: 14 in / 356 mm


• Thread: 1-1/4 in-7 internal


• Welding method: Laser welding


• Body material: Carbon steel


• Compatible machines: Hand drills, stand drills


• Cutting materials: Reinforced concrete, red bricks, concrete, foam bricks


• Product dimensions: 16.22 x 3.00 x 3.00 in (412 x 76 x 76 mm)


• Net weight (incl. accessories): 3.82 lb / 1.73 kg