Specification Brand : DOFEDOFO BulletPoint1 : The High Hardness Alloy Steel Standard 6.35mm 1/4" Outside To System 4mm Inside Micro Bit Hex Socket Shank, 3 Pieces 1/4 to 4mm Hex Adapter Magnetic(Total Length 25mm) and 3 Pieces 1/4 to 4mm Drill Extension Bit holderer for Micro Bits(Total Length 45mm) BulletPoint2 : The 1/4 inch to 4mm bit adapter made of premium quality modified tool steel with high hardness, Extra hard with natural finish for durability and strength BulletPoint3 : The 1/4 to 4mm hex Micro Bit Socket Shank Converter for Manual Electric Tool Adaptor holderer Precision Bits Set Screwdriver Converter Fits 1/4" 6.35mm Handle BulletPoint4 : The 1/4 inch to 4mm bit adapter with strong magnetic can holder the micro bits tightly.which could help you work more efficiently BulletPoint5 : Package include: 3 Pieces 1/4 to 4mm Hex Adapter Magnetic(Total Length 25mm) and 3 Pieces 1/4 to 4mm Drill Extension Bit holderer for Micro Bits(Total Length 45mm).You will receive a total of 6 pieces to meet your usage needs.Please Check The Size You Need Before Buying Color : Gold CompatibleFastenerDescription : 0.25 inches DriveSystem : Hex ExternallyAssignedProductIdentifier1 : 0774196928522 ExternallyAssignedProductIdentifier2 : 774196928522 FinishType : Polished ItemLength : 25 millimeters ItemName : 1/4 to 4mm Bit Adapter, Hex Screw Driver Bit Adapter Magnetic,6.35mm Outside To System 4mm Inside Micro Bit Drill Extension Socket Shank for Precision Bits Set Screwdriver Converter (6) ItemPackageDimensions_Height : 6.5024 centimeters ItemPackageDimensions_Length : 1.1938 centimeters ItemPackageDimensions_Width : 4.8006 centimeters ItemPackageQuantity : 6 ItemTypeKeyword : hex-keys Manufacturer : DOFEDOFO Material : Alloy Steel ModelName : BS90 ModelNumber : BS90 NumberOfBoxes : 1 NumberOfItems : 6 NumberOfPieces : 6 OperationMode : Mechanical ProductDescription : High Hardness Alloy Steel 6.35mm (1/4") to 4mm Micro Bit Hex Socket Shank Adapter Set ProductSiteLaunchDate : 2024-05-13T12:11:45.135Z Size : One Size SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 27112800