CorePlus DCDKIT7 Diamond Dry Core Drill Bit Set, 7 Piece. The CorePlus Diamond Dry Core Drill Bit delivers a smooth drilling experience. Its 8mm diamond segments feature a high concentration of premium-grade diamond in the bond, utilising leading edge diamond/metal bonding, metallurgy, for long-lasting core life. A ribbed core body, and V-groove segments, enable the fast clearing of debris, allowing for a continuous fast cutting action, while the aerated core design enhances cooling, and extends core life. 1/2in BSP threaded Drill Bit is compatible with standard core drilling machines, and accessories. This 7 piece CorePlus Diamond Dry Core Drill Bit Set is supplied in a sturdy aluminium storage case. 3 x Diamond Dry Core Drill Bits: 38, 52 and 117mm. 1x CorePlus DCDKIT7 Diamond Dry Core Drill Bit Set, 7 Piece. [STATIC_PRODUCT_CAMPAIGN Name=”Daily Deal”]. You may also like. No listed products found. Toolden is a dedicated and passionate team, based in the North East of Scotland. We have a great blend of knowledge and innovation, experience and commitment, practical and’techie’ in the Toolden team. All of this comes together to offer the highest level of service we can possibly provide to our ever growing cherished customers.