Specification Brand : Qqmora BulletPoint1 : LARGE HOLE CUTTING: Of sharpness teeth are ideal for cutting holes in soft metal, wood, PVC board, plastic. Cut , smooth and accurate holes BulletPoint2 : QUALITY HIGH SPEED STEEL: Made of high speed steel, has the advantages of high hardness, high wear resistance, high heat resistance, etc. BulletPoint3 : SPECIAL PROCESS: Special heating process is adopted to prolong the service life and prevent rust, useful and reliable BulletPoint4 : FAST CHIP EVACUATION: Unique hole design can easily evacuate chips and effectively improve drilling efficiency BulletPoint5 : WITH SPRING BACKING: HSS cutting edges provide impact resistant teeth and tooth stripping resistance. Soft spring form a flexible backing that allows the hole saw to absorb the effects of the job of drilling holes in difficult to cut materials Color : 3 9/16in(90mm) CompatibleMaterial1 : Stone CompatibleMaterial2 : Marble CompatibleMaterial3 : Marble ExternallyAssignedProductIdentifier : 9968016582549 FinishType : Finish IncludedComponents : inc ItemName : Power Drill Hole Saw, Accurate Cut Bimetal Hole Saw High Wear Resistance Flexible Backing Efficient Drilling with Heavy Duty Arbor for Wood PVC Metal(3 9/16in(90mm)) ItemPackageDimensions_Height : 5 centimeters ItemPackageDimensions_Length : 10 centimeters ItemPackageDimensions_Width : 10 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : hole-saws Manufacturer : Qqmora Material : Material Material1 : Carbide Material2 : High Speed Steel ModelName : Oumefarndfv4907sr ModelNumber : Oumefarndfv4907sr NumberOfItems : 1 PartNumber : Qqmoradbta4ncxw1697-11 PowerSourceType : PowerSource ProductDescription : Feature: 1. LARGE HOLE CUTTING: Of sharpness teeth are ideal for cutting holes in soft metal, wood, PVC board, plastic. Cut , smooth and accurate holes 2. QUALITY HIGH SPEED STEEL: Made of high speed steel, has the advantages of high hardness, high wear resistance, high heat resistance, etc. 3. SPECIAL PROCESS: Special heating process is adopted to prolong the service life and prevent rust, useful and reliable 4. FAST CHIP EVACUATION: Unique hole design can easily evacuate chips and effectively improve drilling efficiency 5. WITH SPRING BACKING: HSS cutting edges provide impact resistant teeth and tooth stripping resistance. Soft spring form a flexible backing that allows the hole saw to absorb the effects of the job of drilling holes in difficult to cut materials