The Flex Head Ratcheting Combination Wrenches feature a market leading 2.5 degree of arc swing, and alongside the flex-head, allows The users to work quickly and efficiently tight spaces. With durable double-stacked pawls in the ratcheting mechanism we offer a long ratchet life and improved access with 144 ratcheting positions. MAX BITE Open-End Grip improves the ratchet wrench's grip on nuts and bolts, offering 25 percent more torque than smooth-faced wrenches and preventing rounding of the fastnener. Each combination wrench features a comfortable I-Beam handle design for improved ergonomics. The ratcheting combination wrench set features ink-filled size labels for easy size identification, as well as quick distiction between SAE and metric sets. We stand behind The products, offering a Lifetime Guarantee on all of The combination ratchet wrench sets.