Wet Diamond Core Drill Bit 108mm, 355mm Depth, 1-1/4-7 Thread

Diamond wet core drill bit delivers clean, controlled drilling in concrete and masonry with water-cooled cutting to reduce airborne dust. Built with a laser-welded diamond segment head and carbon steel body, it’s designed for stable performance when coring through reinforced concrete, brick, and similar hard materials. Universal 1-1/4"-7 inner thread fits many water drills and core drill rigs for fast setup on job sites and indoor installs.

• Fits standard core drill rigs and water drills with universal 1-1/4"-7 inner thread connection


• Delivers dust-reduced wet coring using water cooling for cleaner indoor or enclosed-work operation


• Includes an 80 mm diamond saw blade to handle additional cutting tasks without extra purchases


• Maintains cutting stability with laser welding to reduce tooth loss and weld separation over time


• Handles reinforced concrete, red brick, concrete, and foam brick for common construction installations

Use this wet diamond coring bit when you need accurate openings for air conditioning lines, plumbing and pipeline runs, stair railings, and general construction work. The 108 mm diameter supports common pass-through sizes, while the extended core depth helps reduce repositioning during deeper drilling. For best results, pair with steady water flow and compatible equipment speed/torque settings for the material. Stock up before your next install—grab yours today.

• Diameter: 4.25 in / 108 mm


• Maximum core depth: 14 in / 355 mm


• Product dimensions: 18.5 x 4.3 x 4.3 in / 470 x 108 x 108 mm


• Net weight (incl. accessories): 6.7 lb / 3.04 kg


• Adapter: Inner thread 1-1/4"-7


• Welding method: Laser welding


• Compatible machines: Water drill, core drill rig


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


• Included accessory: 3.15 in / 80 mm diamond saw blade