Laix B007 Retractable Clip-on Aluminum Self-Defense Emergency EDC Tactical Ink Pen - Golden Yellow
High hardness stainless steel embedded tungsten steel; It can be easily do mark in the glass rock and hard surface; Not only provides a writing tool for you but also a emergency tool to break glass and escape in time; Ergonomic design with clip for easy hanging onto your clothes or bag; Effectively prevent criminals for a chance to escape