The Improved Wrench Line from Sunex Tools features chrome vanadium to provide more strength and durability to last. The traditional polished combination wrenches now feature a radius V-groove on the open ends for a better grip on fasteners, while also preventing them from rounding-off, the company says. A 15-degree offset on the box end still provides clearance for fingers, along with a chamfered opening for faster alignment over fasteners. All wrenches are conveniently stored in a durable canvas pouch.