Features: Stainless steel body and cap. Hi-Tec-C 0.4mm black refill. (1) threaded "coin-screw" back plug & (1) plain "coin-screw" back plug. Titanium pocket clip. High-quality felt carrying sleeve. Description: When you're looking for a timeless, sleek pen that's ideal for a gift or to complete your signature style, the PHX-Pen from Big Idea Design is ideal. It's simply an excellent pen that fits easily in your pocket. The well-balanced and solid feel makes writing a pleasure. The weight of the pen helps keep the tip on the paper and makes drawing straight lines easier. This newly updated version features a removable titanium pocket clip along with the ability to accept more refills than the original version. Looking for a pen with more teeth? We carry a wide variety of self-defense Tactical Pens! Works with Refills: Muji Gel Ink Ballpoint Pen Refill 0.38mm (Sku#4548718815890) Pilot Hi-Tec-C & G-Tec-C standard refills Rotring Tikky Liner Gel - 0.3, 0.5, 0.7 mm Uniball Signo DX Refills (UM-151) (UMR-1) 0.28, 0.38, 0.5 mm Uni-ball Signo Needle (UMR-1ND-38) (0.38 mm) Uniball Signo Gel Pen (UMR-5)(0.5 mm) Uni-ball Signo Gel Pen Refill (UMR-10) 1.0 mm