KnifeStyle Genuine Titanium Pen Self Defense Tactical Pen with Glass Breaker Excellent CNC Milled Titanium Body. Ultra-solid & Rugged Material Construction Refilled by Schmidt P900M Made in Germany Extremely Hard Tapered Tungsten Steel(Cemented Carbide) Glass Breaker/Defense Tip Regular Size and Light weight as Other Normal Writing Pen. Easy to Carry on and Go through the Security Check Extremely Sturdy and Beautiful! Excellent Tactical Pen Well Beyond The Price.