Safe Defense Knife Pen

This is a small but powerful practical self-defense tool. There are always unforeseen things in life. We cannot avoid it but we can reduce the risk of injury. The self defense keychain is not only a self defense tool but also a assurance of life safety. You would better to have one than need but haven’t (especially for women and teens). Features: Knife and sleeve length: 13.5cm Length of handle and sleeve handle: 8 cm Blade length: 5.5cm Edge width: 0.7cm (max) Close: (insert blade into sleeve) Edge thickness: 0.1cm Tube diameter: 1.2cm Caution: do not scratch when sharp objects are used. Surface of worktable: blade grinding, handmade alumina. Processing materials: aluminum castings, surface oxidation.