Sk Professional Tools 88523 Combination Wrench, Alloy Steel, Chrome, 23 mm Head Size, 13 in Overall Lg

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. wrench.
• 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.