Specification Brand : Performance Tool BulletPoint : 16 pc. Hole Saw Set BulletPoint1 : Contains six of the most popular sizes BulletPoint2 : A must have for any tool box fabricator BulletPoint3 : For materials up to 1/2" thick BulletPoint4 : Made in the U.S.A. BulletPoint5 : Shank size is 3/8 - suitable for all common electric drillers. Max depth 1 inch. Color : White CompatibleMaterial : Metal CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier1 : 039564128035 ExternallyAssignedProductIdentifier2 : 0039564128035 ExternallyAssignedProductIdentifier3 : 00039564128035 ExternallyAssignedProductIdentifier4 : 0632175000020 ExternallyAssignedProductIdentifier5 : 00632175000020 FinishType : Coated IncludedComponents : Drill Bits & Sets ItemDisplayDimensions_Length : 7 inches ItemDisplayWeight : 1.45 pounds ItemName : Performance Tool W9071 16-Piece Carbon Steel Hole Saw Set - Durable Blades in 12 Sizes, with Arbors, Hex Key, and Carrying Case ItemPackageDimensions_Height : 21.8 centimeters ItemPackageDimensions_Length : 4.6 centimeters ItemPackageDimensions_Width : 15.6 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : hole-saw-sets Manufacturer : Performance Tool Material : Carbon,Carbon Steel,Steel ModelName : Performance Tool ModelNumber : W9071 NumberOfFlutes : 1 NumberOfItems : 1 NumberOfPieces : 10 PackageLevel : unit PartNumber : W9071 ProductDescription : Oudtinx Diamond Drill Bit - Hole Saw Set of 10 Pieces All Popular Sizes from 1/4 to 2 Inch for Wet Cutting Tiles, Glass, Fish Tanks, Marble, Granite, Ceramic, Porcelain, Bottles, Quartz Sinks, Lot 10 Diamond Coated Core Hole Saws- Kitchen, Bathroom, Shower, Faucets 10 Popular Sizes: 1/4 to 2 - Elegant storage case. High Quality Diamond Drilling Tool Set of 10 Different Sizes: 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 3/8, 1 1/2, 1 3/4, 2 Popular 10 Sizes - Great Value No need for Center Pilot Drills Please Do NOT Use Dry Maximum 3/8 inch Shank Size Can be used with Handheld or Upright Drillers The diamond particule coating on DRILAX hole saws give superior performance and lifetime. Please note our tools do not need center pilot holes. Center pilot hole drills are mostly for wood, metal, etc. Oudtinx tools can drill 1 in depth. Electroplated diamond coating will wear off if the tool gets too hot. Never let your drill bit run dry. Here is how you could use water to keep the tool cool: a- You can build a mini water dam around the hole with plumbers putty. b- You can choose to spray water on the drill bit. c- Or you can use running water to cool the drill bit. EASY TO USE Center pilot drill bits are for wood, metal, etc.; Here is how you can keep the drill bit on target: a- You can make your own guide out of plywood - plastic or even a card board. All you need is to keep the drill bit in place until it makes the initial marks. b- You can start drilling at an angle, with the edge of the drill bit making a C slot and then getting the drill bit up to vertical. c- You can manually guide the drill bit with wet sponge.