Specification Brand : HARFINGTON BulletPoint1 : Size - Drilling Diameter: 3.15"/80mm, each diamond hole saw is packed in a plastic case for easy storage. BulletPoint2 : Fast Cutting Tool - Diamond core drill bit is sintering with diamond grain, which has the characteristic of high hardness and wear-resistant, can drill smoothly with no broken edges for a long time. BulletPoint3 : Wet / Dry Drilling - Diamond hole drill bit can be used for wet drilling or dry drilling according to your work requirements. Water or lubrication can be used as additional cooling to prolong the service life of the bit. BulletPoint4 : Versatile Applications - Great to drill on a variety of materials, including porcelain tile, ceramic tile, stone, ceramics, masonry brick, quartz, glass, marble, mirror and so on. BulletPoint5 : Note - This porcelain drill bit is not suitable for drilling on wood or metal. Adding water or lubrication when drilling can prolong working life. Color : Black CompatibleMaterial : Porcelain, Ceramic, Stone, Masonry Brick, Quartz, Glass, Marble, Mirror CuttingAngleString : 45.0 degrees ExternallyAssignedProductIdentifier1 : 799964006882 ExternallyAssignedProductIdentifier2 : 0799964006882 FinishType : Diamond ItemName : HARFINGTON Diamond Core Drill Bit 3.15"/80mm Dia Diamond Hole Saw Kit for Tile Porcelain Ceramic Marble Stone ItemPackageDimensions_Height : 3.74 inches ItemPackageDimensions_Length : 4.72 inches ItemPackageDimensions_Width : 4.72 inches ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : core-drill-bits Manufacturer : HARFINGTON Material : Diamond Material1 : Diamond Material2 : Alloy Steel ModelNumber : SDCBA5811X152X35 NumberOfFlutes : 2 NumberOfItems : 1 NumberOfPieces : 1 PackageLevel : unit PartNumber : hta230927hh000881 ProductDescription : Diamond core drill bit is sintering with diamond grain, which has the characteristic of high hardness and wear-resistant, can drill smoothly with no broken edges for a long time. Each Diamond drill bits are well packed in a single plastic box for easy storage and convenient to carry out. Diamond hole drill bit can be used as wet drilling or dry drilling according to your work requirements. Great to drill on a variety of materials, including porcelain tile, ceramic tile, stone, ceramics, masonry brick, quartz, glass, marble, and so on. Diamond hole saw set can be installed on hand drills, electric drills and bench drills. Note: This porcelain drill bit is not suitable for drilling on wood or metal. Adding water or lubrication when drilling can prolong working life.