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(More customer reviews)Disclaimer- I'm an amateur using a professional's tool. I have cored 11 inches with a 4 amp Bosch drill, using a water swivel for lubrication. (A heavier duty drill would be desirable). The highest grade turbo core drill is only slightly more expensive than the cheapest, so I'll be coring when the need arises for the rest of my life with this beauty.
Click Here to see more reviews about: C52 Segmented or Double Pointed Solid Back Core Bits Size: 3-1/2"
D32207 Size: 3-1/2" -C52 Segmented or Double Pointed Solid Back Core Bits. -Quality level 5 - Hard aggregate and heavy steel. -Faster drilling - The double-pointed segments provide incredibly fast drilling speeds. -Wet only. -Other sizes: 2'' L, 1/4'' L, 2-1/2'' L, 3'' L, 3-1/2'' L, 4'' L, 4-1/4'' L, 4-1/2'' L, 5'' L, 5-1/2'' L, 6'' L, 6 1/4'' L, 6 1/2'' L, 7'' L, 8'' L, 9'' L, 10'' L, 12'' L, 14'' L, 6-3/4'' L, 11'' L, 26'' L, 16'' L, 18'' L, 20'' L, 24'' L, 30'' L, 3-1/4'' L, 7-1/2'' L, 8-1/2'' L, 1-1/8'' L, 1-1/4'' L, 1-3/8'' L, 1-1/2'' L, 1-5/8'' L, 1-3/4'' L, and 1-7/8'' L. -Reduced vibration improves drilling efficiency and bit life. -Diameter: 1'' L. -Bit Diameter: 1'' - 14'', 16'' - 17'', 18'' - 19'', 20'' - 31'', 32'' +. -Core Travel: 14'', 20'', 22'', 24'', 36''. -Fast seating and reduced vibration - The double-pointed tips penetrate quickly, and hold a straight drilling path to reduce side drag. -Improved cooling and slurry removal - The double-pointed segments increases water flow reduce heart and removal slurry more efficiently. -Specially formulated segments - Pro V bits contain high concentrations of quality diamonds combined with a special blend of metal powders to delivers maximum performance with lowest drilling costs. -1'' - 6'' are laser welded. -6-1/4'' are brazed. -16'' and above standard with spoke back. -Solid or welded backs and special barrel lengths are available upon request.
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