Feature 160HRC: Self tightening spanner is made of high hardness steel forged to 60HRC, impact resistant and wear resistant. 2SAVE POWER: Length is 270mm, thickness is 8mm, clamping range is 8 to 22mm, suitable for nuts of different sizes, 14 to 22mm. Utilizing the principle of leverage, it saves more power. 3PREVENT SLIPPING: Universal self tightening wrench is designed with unique teeth and protection threads, smoothly to use and not easy to slip. 4EASY OPERATION: Simply align the hole of the wrench with the nut and you can do many jobs without changing to a different size wrench. 5APPLICATION: Double ended wrench is suitable for home decoration, construction, carpentry, automotive, bike, motorcycle repair and home maintenance.Item Type:DoubleEndedSelfTighteningWrenchMaterial: SteelTotal Length: Approx. 270mm / 10.6inApplicable Range: Approx. 8-22mm / 0.3-0.87inUsage: Wrench for Holding Nuts of Different Sizes. Applicable People: Outdoor Enthusiasts, Automobile Repairers, Home Users .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List4 x DoubleEndedSelfTighteningWrench