Specification Brand : uxcell BulletPoint : The tools are made of high quality steel alloy. BulletPoint1 : Size: 1/2-inch drive, T40 torx size, 55mm total length. BulletPoint2 : Material: Made of S2 alloy steel, withstand high torque and do not twist, protecting both the bit and the fastener. BulletPoint3 : High Hardness: Hardness can be arrived at 58HRC, strong and durable for use. BulletPoint4 : Precise Size: Chamfered ends insert smoothly into fastener head, reducing wear. BulletPoint5 : Fit For: Notched drive ends fit any 1/2-inch drive ratchet or extension, preventing them from falling off. BulletPoint6 : Compatible Pin Product Number: P3020S Compatible O-Ring Product Number: RP20S *Includes 10 plastic bags BulletPoint7 : WARNING: Please ensure the O-ring pins are properly sized before using. O-ring pins are consumables. Replace worn or worn Color : Chrome-moly CompatibleFastenerDescription : 0.5 inch Configuration : 13 Piece CustomerPackageType : Standard Packaging DriveSystem : Torx DriveSystem1 : Square DriveSystem2 : Torx ExternallyAssignedProductIdentifier : 4953488266474 ExternallyAssignedProductIdentifier1 : 729440464967 ExternallyAssignedProductIdentifier2 : 0729440464967 ExternallyAssignedProductIdentifier3 : 00729440464967 FinishType : Steel ItemDisplayWeight : 0.39 pounds ItemLength : 2.17 inches ItemName : uxcell 1/2-Inch Drive T40 Torx Bit Socket S2 Steel 55mm Length 2 Pcs ItemPackageDimensions_Height : 16.8 centimeters ItemPackageDimensions_Length : 3.9 centimeters ItemPackageDimensions_Width : 12.3 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : star-drive-sockets Manufacturer : uxcell Material : S2 Steel Material1 : S2 Steel Material2 : Chrome Molybdenum Steel ModelName : 10282B ModelNumber : a19032100ux0995 NumberOfBoxes : 1 NumberOfItems : 1 NumberOfPieces : 2 PackageLevel : unit PartNumber : a19032100ux0995 Pattern : Impact ProductDescription : Descriptions: * Made of S2 alloy steel, withstand high torque and do not twist, protecting both the bit and the fastener. * Notched drive ends fit any 1/2-inch drive ratchet or extension, preventing them from falling off. * Wide used in DIY hand-making, household maintenance, and most general repairs.