Angled Open End – To reduce the working swing arc in tight spaces, the open end is angled 15 degrees so the wrench can be flipped over with each rotation to engage the fastener twice as often 12-Point Box End – Doubles the available access angles compared to a 6-point end Prevents Round-Off – In order to prevent rounding off fasteners, the box end is designed to contact and apply force to the sides of a fastener head and not the corners Offset Box End – The box end is offset 15 degrees, creating clearance for your fingers and making it easier to reach around obstructions Clear, Stamped Markings – A size marking is permanently stamped onto both sides of each combination wrench for quick identification