Drive: 1/2"Overall Length: 2-11/16"Material: Polished Chrome Vanadium SteelBall And Socket Design Allows For 360 Degree RotationIdeal For Accessing Bolts/Nuts That May Be Tucked Behind Engine Parts Or Other ObstaclesGives User Improved Access To Hard To Reach AreasUniversal Joint Attaches Directly To Ratchet Handle Or Extension And Readily Accepts Socket Of Appropriate DriveKnurled Rings To Facilitate Handling, Especially In Oily/Greasy Conditions