The solid TC4 titanium alloy pen designed by our shop and processed by the factory. Refills: Standard G2 refills are commonly used in this pen like Parker, Fisher and Schneider that you can get anywhere super easy to exchange refills. Using solid TC4 titanium alloy, CNC technology, bolt switch, easy to use. Holding pen is increased with lines, so that you will not slip when writing. Material: TC4 titanium alloy, pen clip is stainless steel Process: CNC Specifications: Length 122mm (~4.8"), Diameter 10mm (~0.39") Weight: 21g (~0.74oz) Purpose: Tactical style writing pen Package: 1pcs EDC Titanium pen SKU:WTY129