Drive: 3/4"Overall Length: 3-3/4"Material: Black Oxide Heat-Treated Alloy SteelBall Detent Design For Excellent Impact Socket RetentionFeatures A 15 Degree Swivel To Give User Improved Access In Hard To Reach PlacesIdeal For Accessing Bolts/Nuts That May Be Tucked Behind Engine Parts Or Other ObstaclesUniversal Joint Attaches Directly To Ratchet Handle Or Extension And Readily Accepts Socket Of Appropriate DriveBall And Socket Design Provides A 360 Degree Working AngleIdeally To Be Used With Impact Sockets, But Perfectly Compatible With Traditional (Non-Impact) Sockets