Professional Quality Diamond Core Drill Bits for Concrete Asphalt Bricks Blocks Laser Welded Wet Use. Professional quality in the industry, latest technology, fast drilling Great for concrete and asphalt bricks blocks stones. 17" Length to produce 14" core. Laser welded. Segment height 0.400". Wet use 1 1/4"-7" threads. Threads: 5/8"-11" or 1-1/4"-7" Core bits diameters from 5/8" to 1-5/8" have 5/8"-11" thread connection Core Bits diameters form 1-3/4" to 20" have 1-1/4"-7" thread connection Materials and applications: Professional-grade diamond water drill is widely used in many fields. Concrete, Masonry, Blocks, etc. Hard Sandstone, Coarse Sandstone Breeze Block & Soft Slate Equipment: Hand-held core drills or core drill rigs
