Milwaukee 21-mm Metric Ratcheting Combination Wrench features a MAXBITE™ Open-End Grip that enhances the wrench's hold on nuts and bolts, delivering 25% more torque d to smooth-faced wrenches. This wrench is designed with double-stacked pawls in the ratcheting mechanism, boosting its durability and longevity for reliable use. It 2.5 degrees of arc swing and up to 144 ratcheting positions, allowing easier access in tight spaces. The ergonomically designed I-Beam handle ensures comfortable use, while the ink-filled size labels provide quick and easy tool identification. Model Number: 45-96-9321