Ratcheting Box Wrench Wrench Style Double End Reversing No Metric Size 16 x 18mm Number of Points 12 Overall Length 8 In. Finish Full Polish Material Vanadium Steel Standard Tool(Accessory Needed for Tethering) Offset 0 Degrees Flexible Head 0 Degrees Min Arc Swing 5 Degrees Number of Geared Teeth 72 Meets/Exceeds DIN and ANSI