Specification Brand : EDiamondTools BulletPoint1 : HIGH PERFORMANCE - designed for hard stone material (up to 8 Moh's hardness) countertops BulletPoint2 : VACCUM BRAZED SIDE PROTECTION - vacuum-brazed side designed for smoother core and easier bit removal BulletPoint3 : SIZE/ARBOR - 1-3/8" diameter with 1/2" shank adapter BulletPoint4 : DRILL DEPTH/SEGMENT HEIGHT - 2" drilling depth with 8mm segment height BulletPoint5 : USE WET OR DRY - recommended for 1/2” chuck drills with >6 amp motors CompatibleMaterial1 : Porcelain CompatibleMaterial2 : Ceramic CompatibleMaterial3 : Marble ExternallyAssignedProductIdentifier1 : 0810064971754 ExternallyAssignedProductIdentifier2 : 810064971754 ItemName : 1-3/8" High Performance Diamond Core Bit for Natural/Engineered Stones, 2" Depth, 5/8"-11 Arbor with 1/2" Chuck Adapter ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 1 centimeters ItemPackageDimensions_Width : 1 centimeters ItemTypeKeyword : core-drill-bits Manufacturer : EDiamondTools Material : Diamond ModelNumber : VT-MEISHIXIDAO-28mm-US NumberOfFlutes : 2 NumberOfItems : 1 PackageLevel : unit PartNumber : GBW0138A5ADJ72 ProductDescription : 1-3/8" high performance core bits designed for for very fast drilling speed even on hard stone materials (up to 8 on Moh's hardness). Also capable for easily creating mounting holes in concrete, granite, quartz, marble, terrazzo countertops and features a vacuum-brazed side protection to create a smoother core and easier bit removal. Please note, 1/2" shank adapter is included. Diameter: 1-3/8 inch Drilling Depth: 2 inch Segment Height: 8mm Arbor Size: 5/8"-11 with 1/2" shank adapter Drilling Method: wet or dry Materials: concrete, granite, quartz, marble, terrazzo countertops ProductSiteLaunchDate : 2022-03-01T19:19:24.222Z Size : Natural/Engineered Stone Style : 1-3/8" Diameter SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Stone SurfaceRecommendation1 : Concrete SurfaceRecommendation2 : Masonry UnitCount : 1 UnspscCode : 27111700