?Material Aluminum alloy material? The wrenches are made of lightweight aluminum alloy material, weight: 195g. Overall heat treatment, good toughness, high torque, strong tightening property. ?Design Precision turbine design? The precision turbine slider is tightly matched to the worm. The sliding is flexible and fast, the torque is strong, the toughness is good, the adjusting aperture is stable, the sliding is easy to adjust quickly, and the working efficiency is improved. ?Widely Used Adjustable Wrench? Our wrenches are suitable for tightening or loosening nuts and bolts, pipes and tube nuts for removing plumbing fixtures, sinks or gas industry. Not suitable for use on heavy metal. ?Adjustable wrench size? This strong but lightweight aluminum wrench has adjustable jaws that open between 9 and 70mm. The wide jaws and a short handle make it perfect for tightening the jam nut on a basin. ?Ultralight short shank? Features super low design, 8 inch length for easy access to tight spaces,