1.25" Dry Type Diamond Core Bit BLUEROCK Tools Brand 5/8" 11UNC Female Threads 1.25” Outside Diameter, Overall Length: 11" Approximate, Inside Barrel Depth: 10" or 255mm For concrete, asphalt, brick, stone, rock and tile masonry Ventilated and ribbed for efficient dry core drilling NOTE: Our BLUEROCK core drilling machines have a 1-1/4” 7UNC male spindle. Please see the 1-1/4” 7UNC female to 5/8” 11UNC male adapter if using this bit with a BLUEROCK machine. See our other listings for Dry Core Bit Sets and Z1 Core Drills Rotary use only. Do not use a hammer action. NEW - DRY type 1.25" BLUEROCK Tools diamond coring bit for core drill. This DRY typed core bit has a 5/8” 11UNC female threads. NOTE: Our BLUEROCK core drilling machines have a 1-1/4” 7UNC male spindle. Please see the 1-1/4” 7UNC female to 5/8” 11UNC male adapter if using this bit with a BLUEROCK machine Note to buyers: Concrete coring bits are considered a consumable part. Bit life varies based on many factors including; material type, material density, depth of cut, hole diameter, drilling speed, wet/dry drilling and operator experience. As such, it is extremely difficult for BLUEROCK Tools to assess individual projects and speak to how long a bit will last before it needs to be replaced. We consider these core bits to be mid-grade in their performance but sold at a low-grade price point. Our customers tend to consider these bits to be a better value compared to high-grade bits that are a lot more expensive. We often hear that even though high-grade bits may last twice as long, they cost four times the price and they are happy buying our bits and getting the same amount of feet cut for half the price. Wet type concrete coring bits are NOT designed to cut all types of rock. They are primarily designed to cut concrete. Certain types of rock can be cut, but it will limit the bit life. The decision to use these bits on materials that they are not primarily designed for will be done at the risk of the user and not covered under our standard business policy.