Vktech Tactical Pen Self Defense Cooyoo Tool Tungsten Steel Anti-skid Portable (Black) 100% Brand new and high quality Provide nice writing tools with high performance and bodyguard for emergency Can be used as broken glass apparatus for quickly escaping when driving in an emergency Pen body material: Aviation aluminum 6061-T6 Size: Approx. 14.5*1.2cm (L*D)