Double-sided gear design: easy to tighten screws, without repeatedly aligning No obstinacy: flexible on and off, smooth, smooth, stubbornly, high efficiency High hardness aluminum alloy clamp: automatic adjustment, adjustable wrench, comfortable, automatic adjustment design PRECISION DIMENSIONS - Clear and beautiful dimensions, accurate opening and difficult to use Strict quality control: small space when half opening, the key cooperates closely, no obvious deviation when using it, Weight: 0.72642315329 pounds, Manufacturer: Rtxbvg