High quality chrome vanadium steel construction is designed, for excellent service life and durability.12 point Interior magnetic head design firmly keeps spark plugs in place during installation and removal, protects against wear outs and allows for easy installation.Specialty designed swivel top rotates 360 degree for maximum flexibility and extra long 12 inch extension makes tight spaces easily accessible.Fully polished, chrome plated mirror finish maximizes longevity in abrasion and resist against rust and corrosion.Contoured knurled grip on shaft provides ergonomic comfort for long use, reducing chance of hand fatigue and provides non-slip surface.Size: 30 * 14 mm; 3/8-inch driveThin walls are only 17.7mm thick, as opposed to 19.7mm standard thicknessColor: silverMaterial: steelCompatible with certain BMW and Nissan engines and MINI R55, R56, R57, and R60.Package Contents:1 * Spark plug socketOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.