The MILWAUKEE® DIAMOND PREMIUM™ Wet Core Bits are designed to the highest standards, only using quality diamonds. Available in sizes 3/4" - 14", DIAMOND PREMIUM™ Wet Core Bits offer exceptional drilling life and speed in cured concrete with hard aggregate and medium steel reinforcement. Designed with a threaded cap for easily extending the core bit. Designed for use with MX FUEL™ Core Drills and corded core drills for maximum versatility. Sizes from ¾” – 1-1/2” are compatible with all core drills with a 5/8”-11 thread. Sizes from 2” – 14” are compatible with all core drills with a 1-1/4”-7 thread. Designed for wet use only.