Check the listing for details. 3" Dry Diamond Core Bit for Concrete with SDS MAX Adapter & Pilot bit. Condition: New. Listed at 137.00 USD. We ship Monday through Saturday3" PROFESSIONAL LASER WELDED TURBO SEGMENTED DRY CORE BIT WITH SDS MAX ADAPTER WITH CENTER GUIDE. THIS CORE BIT IS MANUFACTURED FOR DRILLING MASONRY, CURED & REINFORCED CONCRETE WITH MEDIUM TO HARD AGGREGATES & MEDIUM STEEL REINFORCING. THE 12MM TURBO SEGMENTS HAVE THE HIGHEST DIAMOND PARTICLES PER SEGMENT IN THE INDUSTRY. THE NOTCH GROOVE IN SEGMENTS ARE DESIGNED IN AIDING WITH STEEL AGGREGATES IN CONCRETE...Order includes center guideCore by be solid or with slits OUTER DIAMETER: 3" SEGMENT HEIGHT: 3/8" SEGMENT THICKNESS: 1/8” SEGMENT MOLD: GROOVED TURBO SEGMENT STYLE MATRIX HARDNESS: SOFT BOND FOR HARD MATERIALS WITH STEEL REINFORCING CORE TRAVEL: 10” THREAD SIZE: 5/8" BOND TO CORE: INNER/OUTER DOUBLE LASER WELD Includes Core Bit Adapters 5/8"-11 Threaded Male to SDS MAX Male with Center GuideQuality adapter is made from heavy steelEasily convert 5/8”-11 female arbor to SDS MAX malePerfect accessory for your SDS MAX hammer drillINSTRUCTIONS FOR CENTER GUIDE USE:(1) ATTACH CENTER GUIDE TO ADAPTER BY PUSHING IT INTO HOLE. TAP IT IN. THE HEAT EXPANDS THE METAL IN THE CENTER GUIDE AND WILL HOLD IN PLACE TO START HOLE(2) THREAD ON TO DRILL(3) SCREW DRY CORE BIT OVER ADAPTER(4) PENETRATE MATERIAL ABOUT 3/4" TO 1 ½” (PASS THE LASER WELDED SEGMENTS)(5) REMOVE TWIST BIT (WILL COME OUT WITH PLIERS, MONKEY WRENCH OR SCREWDRIVER INSIDE ADAPTER HOLE)(6) CONTINUE DRILLING USING THE BARREL AS NEW GUIDE, DO NOT CORE WITH CENTER GUIDE IN BARREL. Our “tap” in system is an incredible convenience for on the job.Frequent questions we receive:Q: why no nail?A: Because you’re not a carpenterQ: why no hex key?A: Because you’re not building baby furniture Our system is manufactured to tap in the pilot bit made with microscopic grooves to catch when creating your hole to pass the segments to the barrel. An easy twist or wiggle of the guide bit and it comes right off.