Additional Details ------------------------------ Product description: Milwaukee Diamond Bits are designed for fast, efficient coring in a wide variety of concrete, including poured, steel reinforced and pre-stressed, as well as asphalt. Our PREMIUM grade bits are designed to offer exceptional life and conform to the Diamond Core Drilling Manufacturers Association standards. A 14 inch tube length is standard. The bit incorporates a threaded back for attachment to the Diamond Drill Motor. The Diameter of this bit is 7/8 inch and the thread is 5/8-11. FEATURES: 7/8 in. nominal bit size outer diameter. 5/8 in. - 11 thread size, 14 in. tube length. Premium Series - designed to offer exceptional drilling life with smooth, steady effort. Conforms to Diamond Core Drilling Manufacturers Association standards