Specification Brand : HARFINGTON BulletPoint1 : Size - Cutting diameter: 6mm / 1/4", 8mm / 5/16", 10mm / 3/8", 12mm /1/2", 14mm / 9/16", 16mm / 5/8", 18mm / 11/16", 22mm / 7/8", 26mm / 1", 32mm / 1-1/4". The diamond bit set comes with 10 different drill bits to meet your needs. BulletPoint2 : Material - The drill bit set with thickened electroplated diamonds have sharpness, excellent cutting strength for high precision and smooth cuts without edge breakage. Made of industrial grade carbon steel, good toughness, high strength, and durability. BulletPoint3 : Feature - The diamond drill bit with large clearance hole facilitates the entry of cooling water and the escape of chips from the drilled hole, making the drilling easier and faster. Nickel plated coating provides great corrosion resistance, wear resistance, and long service life. BulletPoint4 : Application - The diamond hole saw set is widely used for cutting accurate and clean holes on glass, ceramics, porcelain, ceramic tile, porcelain tile, limestone, slate, marble, light stone and fiberglass. NOT suitable for drilling tempered glass, plastic and wood. BulletPoint5 : Note - When diamond drill bit is working, please always add coolant (water), use at low drilling speeds and pressure, which can greatly extend the tool life . Not suited for use on concrete or deeper than about 1/2 inch. The hole should be entered smoothly, and no side pressure is applied. BulletPoint6 : Heavy-Duty Carbide Tipped Hole Saws Stay Sharp Longer Than High-Speed Steel Or Bi-Metal Cutters BulletPoint7 : Multiple Teeth Reduce Load – Less Cutting Force Required BulletPoint8 : Consists of 7/8", 1-1/8", 1-3/8", Pilot & Arbor. Includes Sturdy Plastic Carrying Case Color : Blue CompatibleMaterial : Plastic CompatibleMaterial1 : Porcelain CompatibleMaterial2 : Marble CompatibleMaterial3 : Alloy Steel CompatibleMaterial4 : Brass CompatibleMaterial5 : Ceramic CompatibleMaterial6 : Marble CuttingAngleString : 60.0 degrees ExternallyAssignedProductIdentifier1 : 791180037299 ExternallyAssignedProductIdentifier2 : 0791180037299 ExternallyAssignedProductIdentifier3 : 00045242183500 GpsrSafetyAttestation : 1 IncludedComponents : Unit^Instruction Guide ItemDisplayWeight : 2155 grams ItemName : HARFINGTON 10pcs Diamond Drill Bit Set 1/4" - 1-1/4" (6mm-32mm) Hollow Drill Bits Hole Saw Set for Glass Tile Porcelain Ceramic Marble Bottles Pots Brick ItemPackageDimensions_Height : 11 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 7.4 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : hole-saw-sets Manufacturer : HARFINGTON Material : Ceramic,Diamond,Glass,Marble,Porcelain Material1 : plastic Material2 : Carbide ModelName : Professional Holesaw Set 3834-95 Sizes: 16-64mm ModelNumber : MLD101203T02 NumberOfFlutes : 35 NumberOfItems : 10 NumberOfPieces1 : 1 NumberOfPieces2 : 4 NumberOfTeeth : 4 PackageLevel : unit PartNumber : hta230413hh0665 ProductDescription : The drill bit set with thickened electroplated diamonds have sharp cutting edge, excellent cutting strength for high precision and smooth cuts without edge breakage. Made of industrial grade carbon steel, good toughness, high strength, and durability. Nickel-plated coating provides great corrosion resistance, wear resistance, and long service life. The diamond drill bit with large clearance hole facilitates the entry of cooling water and the escape of chips from the drilled hole, making the drilling easier and faster. The diamond hole saw set is widely used for cutting accurate and clean holes on glass, ceramics, porcelain, ceramic tile, porcelain tile, limestone, slate, marble, light stone and fiberglass. The diamond bit is NOT suitable for drilling tempered glass, plastic and wood. When diamond drill bit is working, please always add coolant (water), use at low drilling speeds and pressure, which can greatly extend the tool life . Not suited for use on concrete or deeper than about 1/2 inch. The hole should be entered smoothly, and no side pressure is applied.