The MecArmy TPX33 Pen is made of TC4 titanium and comes with a Fisher Space refill which gives the availability to write underwater or in the space. And at the one end, there's a tungsten steelhead for self-defense and glass breaking in an emergency. Features:TC4 Titanium alloy shell, permanent color, corrosion and scratch resistant finishTungsten steelhead for self-defenseFisher Space Pen refill includedElegant appearance, designed for everyday use Specifications:Material: TC4 titanium alloyBody diameter: 12.5mm/0.49inHead diameter: 23.5g/0.83ozRefill: Fisher Space Pen MaterialTC4 TitaniumLength135mm/5.31inHead Diameter12.5mm/0.49inBody Diameter7mm/0.28inWeight35.7g/1.26ozRefillFisher Space PenFeatureTitanium, Glow barAccessory2xO ring
