Proto J1151 Box End Wrench, Head Size 1 1/16 in, 1 1/4 in, Overall Length 18 1/4 in 1AMK9

Genera PROTO®️ Industrial Tools, part of Stanley Black & Decker's Industrial & Automotive division manufactures, markets and sells industrial hand tools to professionals worldwide. Pros who work the most demanding jobs, demand the most from their tools. Which is why every day, all over the globe, millions of workers reach for PROTO®️ Industrial Tools. Our tools tackle heavy-duty industrial applications, like auto, steel and airplane manufacturing plants, chemical factories, refineries; and transportation, fleet, truck and transit maintenance facilities, and more. In fact, PROTO®️ branded industrial tools are some of the most durable tools available – exceeding ASME standards. Their design and product features reflect the direct knowledge and experience of professionals. Developed according to strict ergonomic standards, PROTO®️ Tools offer special advantages such as enhanced shock absorption and reduced slip, as well as unique designs that improve efficiency, productivity and are easy to use. - Box-end wrenches are double end with a different SAE (inch) size on each end for use on two different size fasteners. - The enclosed head on each end of the handle provides more contact to the fastener and allows more torque than an open-end wrench since the box end is less likely to slip off the fastener.