Specification Brand : HARFINGTON BulletPoint1 : Size - Cutting diameter: 19mm / 3/4", 22mm / 7/8", 25mm / 1", 28mm / 1-1/8", 32mm / 1-1/4", 38mm / 1-1/2", 44mm / 1-3/4", 54mm / 2-1/8", 64mm / 2-1/2", 76mm / 3", 89mm / 3-1/2", 102mm / 4", 127mm / 5"; cutting depth: 28mm / 1-1/8". BulletPoint2 : Material - Made of high-speed steel (hss), the hole saw kit offers excellent hardness, toughness, wear resistance, and heat resistance. The sprayed coating resists rust and corrosion. BulletPoint3 : Features - Sharp toothed edges allow for smooth, fast and easy cuts. The hole saws have more cutting edges than carbide hole saws, ensuring faster cutting. Side chip holes facilitate chip removal and prevent clogging, and allow lubricant to reach the cutting area, extending tool life and cutting efficiency. BulletPoint4 : Applications - The Professional Grade hole saw set creates round holes in wood, plywood, plastic, plasterboard, 0.5mm thick aluminum sheet metal, density board (MDF), particle board. Great for various applications such as door locks, hinges, cabinets, pipes. BulletPoint5 : Note - Used with bench drills, drill presses, electric hand drill, cordless drill, etc..The cutting material must be fixed well, and at a 90 degree angle to the hole opener. Do not use on impact drills. Apply an appropriate lubricant, use proper speed and pressure and always wear appropriate safety gear. Color : Multi CompatibleMaterial : High Speed Steel CompatibleMaterial1 : Metal CompatibleMaterial2 : Plastic ExternallyAssignedProductIdentifier1 : 050326177894 ExternallyAssignedProductIdentifier2 : 0050326177894 ExternallyAssignedProductIdentifier3 : 00050326177894 IncludedComponents1 : HOLESAW MHS/CT KIT ELEC 29 PC IncludedComponents2 : HOLESAW MHS/CT KIT ELEC 29 PC IncludedComponents3 : HOLESAW MHS/CT KIT ELEC 29 PC IncludedComponents4 : HOLESAW MHS/CT KIT ELEC 29 PC IncludedComponents5 : HOLESAW MHS/CT KIT ELEC 29 PC ItemName : HARFINGTON 13pcs Hole Saw Set 3/4" - 5" (19mm-127mm) HSS (High Speed Steel) Professional Hole Saw Drill Bit Kit with Mandrels Hex Key Installation Plate for Metal Wood Plastic Plasterboard ItemPackageDimensions_Height : 2.17 inches ItemPackageDimensions_Length : 8.27 inches ItemPackageDimensions_Width : 6.3 inches ItemPackageQuantity : 1 ItemShape : Rectangular ItemTypeKeyword : hole-saw-sets Manufacturer : HARFINGTON Material : Tungsten Carbide Material1 : Blend Material2 : Blend Material3 : Blend Material4 : Blend Material5 : Blend ModelName : 177894 ModelNumber : MHSELE01 NumberOfItems : 1 PackageLevel : unit PartNumber : hta230626hh000528 Pattern : Solid ProductDescription : Made of high-speed steel (hss), the hole saw kit offers excellent hardness, toughness, wear resistance, and heat resistance. The sprayed coating resists rust and corrosion. Sharp toothed edges allow for smooth, fast and easy cuts. The hole saws have more cutting edges than carbide hole saws, ensuring faster cutting. Side chip holes facilitate chip removal and prevent clogging, and allow coolant or lubricant to reach the cutting area, extending tool life and cutting efficiency. The Professional Grade hole saw set creates round holes in wood, plywood, plastic, plasterboard, 0.5mm thick aluminum sheet metal, density board (MDF), particle board. Great for various applications such as door locks, hinges, cabinets, pipes. Used with bench drills, drill presses, electric hand drill, cordless drill, etc.. The power of hand electric drill needs to be greater than 750W. The cutting material must be fixed well, and it must be at a 90 degree angle with the hole opener. Do not use on impact drills. Before drilling, clamp or secure the workpiece firmly, and mark the center point of the hole. For larger diameter hole saws, it is recommended to start with a guide hole. Apply an appropriate lubricant according to the material being drilled (for example, oil for metal, water for wood). Use proper speed and pressure and always wear appropriate safety gear.