OX 5 Core Drill Set & Accessories Diameter. 38mm, 52mm, 65mm, 117mm, 127mm. 38, 52, 65, 117 & 127mm DIAMOND CORE BITS 150MM LONG. 1X SDS plus ADAPTOR 1/2. 1X HEX ADAPTOR 1/2. 1X 200mm EXTENSION BAR. 1X 13MM PILOT BIT. The OX Spectrum Trade XL 5 Core & Accessories Case, your ultimate solution for dry core drilling. With turbo segments that enhance cutting speed and a spiral design to draw dust away from the cutting edge, this kit ensures efficiency and longevity of diamond tips. Get drilling with everything you need included. Everything you need to get going with dry core drilling in a sturdy, aluminium case. Turbo segments increase cutting speed of the core. Spiral design draws dust away from the cutting edge, increasing speed and life of the diamond tip.