【Self-auto lock】Spring made of copper provides strong power, allowing ruler tape to shrink freely, and retraction buffer device reduces the force and makes it more comfortable to use 【True zero multi-catch hook】Hook of tape is heat treatment increasing stiffness,Zero-Compensation hook apply to internal and external accurate measurements,Level 1 precision tape measure more accurate measurement 【Clear Scale Ruler Tape】Measuring tape come with metric and inch (Fraction),Made of steel and more thicke 0.25mm than other brand.Side passivated doesn't hurt hand 【High Quality Ergonomics Shell】Shell of WISEUP magnetic tape measure is made up of ABS coating rubber which is drop-proof and waterproof.Portable with belt clip and lanyard,easy to hanging and hand-held 【Service From WISEUP】WISEUP has been Founded for 20 Years Who is always Committed to Hardware Manual and Electric Tools,as well as Pneumatic Tools, Auto Repair, Decoration etc. Helping you with your home DIY remodeling as well as work needs 【Service From WISEUP】WISEUP has been Founded for 20 Years Who is always Committed to Hardware Manual and Electric Tools,as well as Pneumatic Tools, Auto Repair, Decoration etc. Helping you with your home DIY remodeling as well as work needs