Diamond core drill bit delivers clean, fast wet coring through reinforced concrete and masonry with reduced heat for longer bit life. The 3-1/2 in (89 mm) diameter and laser-welded segments are built for stable, accurate drilling with less wobble, helping you cut smooth openings for HVAC, plumbing, railings, and general construction. Universal 1-1/4 in-7 internal thread fits common hand drills and drill stands.

Choose this wet diamond coring bit when you need reliable openings without constant rework or overheating downtime. The stable, centered tooth design supports accurate alignment during high-speed rotation, making it easier to keep your bore on target in dense aggregate and brickwork. Ideal for contractors and installers who drill repeatedly for lines, sleeves, anchors, and pass-throughs. Match the thread, use wet cutting where possible, and keep the core clear for consistent results. Grab yours today.