Check the listing for details. 2 1/2'' core bit fits hilti dewalt bosch sds max adapter 4 hammer drill w/ pilot. Condition: New. Listed at 133.00 USD. Ships daily Monday through Saturday2 1/2" PROFESSIONAL LASER WELDED TURBO SEGMENTED DRY CORE BIT WITH SDS MAX ADAPTER AND PILOT BIT. 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 SAFETY GLASSES WITH CASE. OUTER DIAMETER: 2 1/2” 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 WELDIncludes Core Bit Adapters 5/8"-11 Threaded Male to SDS MAX Male WITH GUIDE Quality adapter is made from heavy steel Easily convert 5/8”-11 female arbor to SDS MAX male Perfect accessory for your SDS MAX hammer drill INSTRUCTIONS 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 SCREW DRIVER INSIDE ADAPTER HOLE)(6) CONTINUE DRILLING USING THE BARREL AS NEW GUIDE, DO NOT CORE WITH CENTER GUIDE IN BARREL.