Mexco Premium Dry Diamond Core Drill Bit Kit 3-Core (A10DCDKIT37) – for clean, accurate masonry cores from 38 mm to 117 mm. Designed for professional use, this Mexco three-core drill bit set delivers durable, high-performance drilling in masonry. Whether you’re installing anchors, conduits, or pipework, this kit helps you get precise holes quickly with less downtime and less mess. Premium features for longer life and easier drilling. Why choose this kit. Enhance your masonry drilling toolkit with the Mexco Premium Dry Diamond Core Drill Bit Kit 3-Core. Built to deliver long life, reliability and cleaner, more accurate cores-perfect for professional tradespeople who demand results. Order today and keep your project on track with a kit that travels as well as it performs. Three diamond core drills: 38 mm, 52 mm and 117 mm cores. 200 mm hex and SDS arbors for secure, rapid setup. Ataper pilot drill to guide the cores accurately. A robust carry case for safe storage and easy transport. High diamond concentration: maximum abrasion resistance for a longer service life and cleaner holes. Slotted barrels: improved waste removal for faster drilling and reduced bit binding. Dry core drilling capability: efficient performance in masonry without the need for coolant. Ideal for masonry substrates: brick, concrete, block, and similar materials. Not suitable for hammer action: designed for dry core drilling with conventional rotary action only. Versatile sizing: tackle holes from 38 mm through 52 mm to a demanding 117 mm with one compact kit. Faster project turnaround: superior waste evacuation minimises stalling and saves time on the job. Cleaner results: precise cores with minimal breakout and less dust when used as directed. Travelready: sturdy carry case keeps bits organised and protected onsite. Drill bit type: Diamond core drill (Masonry). Core sizes: 38 mm, 52 mm, 117 mm. Arbors included: 200 mm hex and SDS arbors. Pilot drill: Ataper pilot included. Ensure the drill is secured and the work surface is stable before starting. Fit the correct arbor to match your drill chuck and ensure a snug fit. Use appropriate pressure and let the bit do the work to extend life. After use, wipe and store in the supplied carry case in a dry place. Set or Single Item. 38mm, 52mm & 117mm diamond core drills, 200mm hex and SDS arbor (1), A-taper pilot drill (1).