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. The box end is offset 15 degrees, creating clearance for your fingers and making it easier to reach around obstructions. A 12-point opening doubles the access angles of a 6-point. To prevent round-off, it contacts and applies force to the flat sides of fastener heads rather than the corners. The premium roll-up pouch has a tailored cover that keeps wrenches from sliding out. To prevent scratches on finished surfaces, it has fabric hanging loops rather than metal grommets. For a complete selection of great tools!