Silverline Diamond Core Drill Bit and Arbor Set – Sizes 38mm, 52mm, 65mm, 117mm, 127mm – 868616. Product Overview The Silverline Diamond Core Drill Bit and Arbor Set, model 868616, is a premium large set of heavy duty steel body core drill bit with diamond dust cutting segments that are ideal for dry cutting clean holes in masonry surfaces for general building and plumbing use. Used for dry cutting of accurate larger diameter holes in masonry. It is an extensive kit designed for professional and DIY use, particularly in tasks requiring precise, clean, and efficient drilling through tough materials such as concrete, brick, and stone. This set includes five core drill bits in various sizes (38mm, 52mm, 65mm, 117mm, 127mm) to accommodate a wide range of applications. Each bit is embedded with high-quality diamonds that enhance cutting efficiency and prolong the life of the bits. The kit also includes necessary arbors and a guide drill, making it ready to use right out of the box. Comprehensive Set: Includes five core drill bits in essential diameters for versatile drilling options. High-Quality Diamonds: The bits are embedded with diamonds that provide exceptional cutting power and durability. Diverse Applications: Ideal for creating clean and precise holes in concrete, brick, stone, and other masonry materials. Included Accessories: Comes with two arbors and a guide drill to fit a variety of power drills, enhancing compatibility and ease of use. Robust Construction: Engineered for longevity and performance, ensuring each bit performs optimally over multiple uses. Installing drainage pipes and plumbing fixtures in residential and commercial buildings. Creating openings for electrical wiring and HVAC installations in reinforced concrete or masonry walls. Preparing sites for the installation of railings and barriers by drilling precise anchor holes. Home renovations that require fitting of large fixtures or passage of utilities through masonry. Professional construction tasks where high precision and efficiency are crucial. For use with drills equipped with a safety clutch. Do not use with hammer action. Contents of The SDS PLUS and HEX Core Drill Kit. 38mm 52mm 65mm 117mm and 127mm core drill bits. 2 x long arbors. 2 x short arbors. Guide drill and drift key. Complete in hard storage case.