Features: These combination wrenches have a 12-pt. box end with additional grooves that make it easier to connect with the head of the fastener and connect at more angles for better accessibility compared to a 6-pt. The opposite side has an open end design that allows top and side access to the fastener compared to the box end that can only access a fastener from the top The wrenches have the same SAE (inch) size on each end for use on one specific size fastener. Material / Alloy Steel Finish / Satin Head Size / 20 mm Overall Length / 10 5/8 inch Head Offset Angle / 15 Degrees Opening Angle (Deg.) / 15 Degrees Head Type / Offset Head Thickness / 7/16 inch Measurement Type / Metric Opening Type / Rounded Box End Type / 12-Point Box End Number of Points / 12 Tether Style / Tether Capable Nonsparking / No Non-Magnetic / No Insulated / No Reversing / No Ratcheting / No Handle Color / Silver Anti-Slip Design / No Corrosion Resistant / Yes Wrench Length Style / Standard Standards / ANSI Grip Style / Plain Handle Type / One Piece Wrench Shape / Straight