Check the listing for details. 2 Pack 2-1/2" Wet Diamond Core Drill Bits Cutting Concrete Asphalt Bricks Blocks. Color: Blue, Condition: New. Listed at 149.00 USD. 2-Pack 2-1/2-Inch Laser Welded Wet Diamond Core Drill Bits for Cutting Concrete and Asphalt, Professional Quality, Fast Drilling The professional quality wet/ dry diamond core bits offers the best lifetime available on market, fast drilling for concrete and asphalt Laser wielded Segment height 0.400" Length: 17" long to produce 13-1/2" core 1-1/4"-7 thread Materials and applications: Industrial-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 Free Shipping & Returns: · SAME business day shipping · FREE 30-Day return Contact us: Should you have any questions, please kindly contact us through eBay messaging service Click on the: "ask a seller a question" link on the listing page. We answer most questions instantly. Thank you for shopping with DPT Diamond Tools!