Air Tools & Compressors. Garden Tools & Watering. Tool Boxes & Storage. Work Benches & Vices. Adhesives, Sealants & Fillers. Books, Guides & Videos. Decorating & Tiling Tools. Ladders & Lift Trucks. Detectors & Testing Tools. Huge range of top brand tools. With over 100,000 products available. Add to Favourite Sellers. Sign up to Newsletter. Coreplus Dry Diamond Core Drill Bit 157mm. The CorePlus 157mm Diamond Dry Core Drill Bit delivers exceptional capability for the largest drilling applications in masonry, concrete, and stone materials. At 157mm diameter, this professional-grade bit is designed for major construction and civil engineering projects requiring extra-large access holes for substantial drainage systems, large-scale ventilation installations, or significant infrastructure work. Engineered with 8mm diamond segments featuring a high concentration of premium-grade diamond in the bond, this bit utilises advanced diamond/metal bonding metallurgy for superior durability and extended service life. The ribbed core body works in conjunction with V-groove segments to enable fast clearing of debris, maintaining continuous fast cutting action throughout demanding operations, while the aerated core design enhances cooling and prolongs core life. With standard 1/2in BSP threading, this substantial core bit remains compatible with conventional core drilling machines and accessories, ensuring professional tradespeople can tackle even the largest drilling tasks with confidence. Features and Benefits. 157mm diameter for maximum-capacity drilling applications. High-concentration diamond segments for exceptional longevity. V-groove design facilitates rapid debris removal during operation. Aerated core construction for enhanced cooling performance. Standard 1/2in BSP connection for universal equipment compatibility Specifications: Diameter (mm): 157 Depth (mm): 150. Tooled-Up has been trading since 2001 but started out life as a family run local engineering business supplying local customers in Enfield since 1976. We are still family run business and we strive to continue expanding our huge range of products, maintain our excellent standard of customer service and build on our extensive knowledge base. Any questions please do not hesitate to call our customer services team. We are authorised stockists for all major brands including Black & Decker, Bosch, DeWalt, Draper, Festool, Fiskars, Gardena, Karcher, Makita, Sealey, Snickers, Trend and many, many more. View more great items. Irwin Multi Purpose Drill Bit 8mm 120mm. DeWalt 23 Piece FlexTorq Drill Set. Irwin Multi Purpose Drill Bit 8mm 200mm. Channellock XLT End Cutting Pliers 200mm. Be the first to find out about our latest news and product offers! This listing is currently undergoing maintenance, we apologise for any inconvenience caused.