Features and Benefits:?1-1/4"-7 Thread?15" Drilling Depth?Desgined to be used Wet?Designed specifically for demands of drilling pre-stressed concreteMilwaukee diamond wet core bits are designed to the highest standards, only using quality diamonds. Available in sizes 1 in. to 6 in., Milwaukee pre-stressed wet core bits are designed specifically for the extra demands of drilling pre-stressed concrete. The cutting segments feature small gaps, preventing the bit from snagging on pre-tensioned cables or wire mesh. This bits is 15 in. in length and contains a 1-1/4 in. 7 thread.