Specification Brand : Mavaol BulletPoint1 : [HIGH-PERFORMANCE DRILL BITS] This set includes 5 pieces with various hole diameters and a 7mm hex shank, for a range of drilling needs BulletPoint2 : [EFFICIENT DRILLING] Low cutting obstruction enables drilling, with an adjustable bit for precise hinge offset and easy installation BulletPoint3 : [CARBIDE TIP FOR CLEAN DRILLING] The carbide tip ensures clean drilling through thin materials for concealed hinges, saving time and effort BulletPoint4 : [VERSATILE USAGE] Ideal for woodworking, industrial hinge installation, model making, and more on various materials like solid wood and plywood BulletPoint5 : [DURABLE AND TOUGH] With YG8 alloy head and robust 45 steel body, these drill bits offer strong toughness and impact for long-lasting use Color : Grey CompatibleFastenerDescription : 1/4 inches DriveSystem : Phillips FinishType : Painted GpsrSafetyAttestation : 1 ItemName : Adjustable Hole Opener Drill Bit Set Hex Shank for Hinge Installation 15mm 20mm 25mm 30mm 35mm Woodworking ItemPackageDimensions_Height : 5 centimeters ItemPackageDimensions_Length : 17 centimeters ItemPackageDimensions_Width : 12 centimeters ItemTypeKeyword : hex-shank-drill-bits Manufacturer : Mavaol Material : Alloy Steel ModelName : CST-PH3 ModelNumber : Mavaolo0bmx7sztk NumberOfBoxes : 1 NumberOfItems : 1 NumberOfPieces : 1 PartNumber : Mavaolo0bmx7sztk ProductDescription : [HIGH-PERFORMANCE DRILL BITS] This set includes 5 pieces with various hole diameters and a 7mm hex shank, for a range of drilling needs [EFFICIENT DRILLING] Low cutting obstruction enables drilling, with an adjustable bit for precise hinge offset and easy installation [CARBIDE TIP FOR CLEAN DRILLING] The carbide tip ensures clean drilling through thin materials for concealed hinges, saving time and effort [VERSATILE USAGE] Ideal for woodworking, industrial hinge installation, model making, and more on various materials like solid wood and plywood [DURABLE AND TOUGH] With YG8 alloy head and robust 45 steel body, these drill bits offer strong toughness and impact for long-lasting use