Product Name: Drilling Tools Diamond Core Drill Bits for Concrete Usage: Masonry Drilling, Concrete or Wall Drilling Material: Diamond Type: Core Drill Bit Length: 82/145/200/380/450 Certification: ISO2000:9001 Customized: Customized Advantage: Fast Cutting Speed Color: as Your Requirements Sample Cost: Free Sample Production Time: 5-7days Bulk Order Time: 20-25days Payment Term: 30% Advance, 70% Balance Industry Experience: 8years Trademark: DY-Tools Transport Package: Blister Package, White Box Specification: 25-350mm Origin: Jiangsu Province, China HS Code: 8207191000 Product Description Wet Core Bit forConcrete and HardMasonryHigh performance wet core bits engineered to drill high PSI concrete and reinforced concrete. Both drilling speed and lifetimehave been vastly increased. Idealfor:High PSI concreteConcrete with medium steel reinforcementOther hard masonryIn our lab tests, these bits drilled 50% faster and lasted 35% longer than the general purpose counterparts. High powered dedicated core drills are highly recommended as equipment.Segment Height:10 mmDrilling Method:Wet onlyEquipment:Dedicatedcore drills or rigsFeatures: Fast cutting, long lifeThread: 1 1/4''-7 UNC female thread, 1/2'' BSPWelded: Laser welding ,High frequency weldingType: Wet DrillingSegment type: flat segments, roof segments, turbo segments , crowm segments .Other length and thread can be produced as required.Using a drill with a different arbor? We have theadaptersto make it work!Product picture:Technical details:ODSegment NumberSegment DimensionTube ThicknessValid LengthConnection25312*3.5*92.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-732416*3.5*92.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-736416*3.5*92.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-742424*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-747524*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-752524*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-757524*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-762624*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-767624*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-772724*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-777724*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-782824*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-792824*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-7102924*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-7107924*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-71121024*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-71171024*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-71221024*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-71271024*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-71321124*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-71421124*3.5*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-71521224*4.0*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-71621224*4.0*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-71721324*4.0*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-71821324*4.0*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-72001524*4.0*102.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-72251624*4.0*102.5mm82/145/200/380/450mm5/8''-11 UNC 1/4"-72501724*4.0*103.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-73002124*4.5*103.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-73502324*4.0*103.0mm82/145/200/380/450mm5/8''-11 UNC 1/4"-7Shipping :Our Factory:Our factory was established 1980s, and has along history of more than 20 years. We are now ahigh technology with the capability of production, sales, and research of new technology.Our factory was supported with apowerful technology team, advanced production line, and inspection equipment. We strictly conform to ISO9001-2000 quality control system. Inspection between processes follows the EN standard.We are supply the diamond saw blade, diamond core drill bit, diamond grinding wheel and so on. Our products have exported to Europe, America,Asia and enjoyed good reputation.Hope fully to be your trustworthy supplier in China.Our Service 4F:1. Free sample cost.2. Free eplacement of damaged goods.3. Free design of new packaging for customers.4. Free testing of product quality for customers