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 / 1 11/16 in Overall Length / 23 in Head Offset Angle / 15 Degrees Opening Angle (Deg.) / 15 Degrees Head Type / Standard Head Thickness / 11/16 in, 15/16 in Measurement Type / SAE Opening Type / Hex Box End Type / 12-Point Box End Number of Points / 12 Handle Color / Silver Corrosion Resistant / Yes Wrench Length Style / Standard Standards / ASME B107.100 Weight / 4.74 lb Handle Type / One Piece Wrench Shape / Straight