Specification Brand : uxcell BulletPoint1 : 【SIZE】1/2-inch drive, 21mm 6-point socket, 38mm (1.5-inch) and 78mm (3.07-inch) total length. BulletPoint2 : 【CR-V STEEL】Made of premium chrome vanadium steel with mirror chrome plated finish for strength and anti-corrosion. BulletPoint3 : 【RADIUS CORNER DESIGN】Reduces wear and increases torque on fasteners by placing force on fastener walls rather than fastener corners. BulletPoint4 : 【SHALLOW AND DEEP SET】Standard and deep well sockets deliver balance of reach and torque. BulletPoint5 : 【SIZE MARKINGS】Die-stamped size markings are easy to read and quick socket identification. CompatibleFastenerDescription : 0.5 inch DriveSystem : Hex FinishType : Chrome Plated Finish,Anti-corrosion ItemName : uxcell 1/2-Inch Drive by 21mm Deep and Shallow Socket Set of 2 Pcs, Cr-V, 6-Point, Metric ItemPackageDimensions_Height : 0.98 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.54 inches ItemTypeKeyword : triple-square-drive-sockets Manufacturer : uxcell Material : Chrome Vanadium Steel ModelNumber : a19082300ux0059 NumberOfPieces : 2 PartNumber : a19082300ux0059 ProductDescription : * Made of chrome vanadium steel construction for strength and durability. * With mirror chrome plated finish, to protect against rust and corrosion. * Has 6-point opening that snugly fits the hex shape of fastener heads, allowing it to apply maximum torque without slipping. * Socket geometry is designed to apply force to flat sides of fasteners and not the corners, preventing round-off. * Inclueded shallow and deep socket, meet the needs of different lengths. * Widely used in DIY hand-making, household maintenance, and most general repairs.