ZENESIS™ Obsidian Diamond Core Bit is the most versatile tile and stone core bit ever made. Itcomes with more features than any core bit on the market. New technology allows this bit to drillperfect clean holes in porcelain, granite, marble, ceramic, DEKTON and quartzite dry or wet!Exclusive ZENESIS™ pattern diamond segments give up to 70% longer life over random patternsegments.* Unique drop segments for added durability and weld protection. First core bit everwith depth gauge lines at 20mm and 30mm! Brazed diamonds on the outside and inside of barrelprevent binding and make it easy to remove plug 5/8-11 thread fits all grinders and polishers Must be used wet Drills Engineered Stone, All Natural Stone, and Quartzite Part No. Diameter Segment Arbor Size ZDGUL032B4 1 - 1/4" 8mm 5/8"-11 Threaded ZDGUL035B4 1 - 3/8" 8mm 5/8"-11 Threaded ZDGUL038B4 1 - 1/2" 8mm 5/8"-11 Threaded ZDGUL051B4 2" 8mm 5/8"-11 Threaded ZDGUL057B4 2 - 1/4" 8mm 5/8"-11 Threaded ZDGUL062B4 2 - 1/2" 8mm 5/8"-11 Threaded ZDGUL075B4 3" 8mm 5/8"-11 Threaded
