Proto JSBV1618 Box End Wrench Black Chrome, 1 2 in, 9 16 in Head Size, 7 in Overall Lg, Std, Reversing 6ATY3 Workers per System 1 Workers per System 1 Material Steel Material Grade Class Grade C Finish Black Oxide System of Measurement Inch Thread Type Coarse Thread Direction Right Hand Fastener Thread Type UNC (Coarse) Application For Use with Structural Bolts Material Quality Standards ASTM 563 Hex Type Heavy Hex Removable Yes Rockwell Hardness B78 to C38 Nut Standards ASTM 563 Nut Style Hex Nut Heavy Basic Material Steel Material Grade Grade C Fastener Finish Plain Fastener Thread Direction Right Hand 25 Degrees Insulated No Number of Geared Teeth 72 Wrench Shape Straight Single End Double End Double End Flexible Head No Head Movement Fixed Wrench Material Chrome Vanadium Steel Wrench Product Grouping Wrenches Box End Style Spline Offset 0 Degrees Tether Capable Standard Tool (Accessory Needed for Tethering) Wrench Item Ratcheting Box End Wrench Tether Style Not Tether Capable Non Magnetic No Handle Type Steel Head Offset Angle 0 Degrees Measurement Type SAE Ratcheting Yes Nonsparking No Grip Style Plain Handle Color Black Box End Type 12 Point Box End Get the job done right with this high quality box end wrench