The EDC Pen Without Peers The Ti Pocket Pro is the only pen that can seamlessly telescope to accommodate 80+ different refills without any guesswork, gaps, hacks, modifications, spacers, or tip-wiggle. The entire pen is made from titanium (no plastic parts) with exception of the o-rings. It’s seemingly effortless ability to transform in length to perfectly fit both parker-style ballpoint refills and standard rollerball refills without any visible gaps or hacks makes it a pen without peers. Size / Specs Specifications – Length (w/ shorter ballpoint refill installed) : 4.11 Inches / 104.5 MM, Length (w/ longer rollerball refill installed) : 4.65 Inches / 118 MM. Body Diameter : 0.38 Inches / 9.7 MM. Grip Diameter : 0.45 Inches / 11.6 MM. Weight (empty) : 0.6 oz / 17 grams. Materials Grade 5 Titanium : Pen body, pen tip, grip, and all internal parts (no plastic parts). Grade 4 Titanium : Pocket Clip (for proper tension). Industrial Strength Silicone : O-rings that go on the body of the pen. Most pens on the EDC market fall into two refill types, ballpoint refills or rollerball refills. The Ti Pocket Pro completely changes the game and plays well with both styles. There are way too many to list on the page so feel free to check out our google doc to see all the refill options you can use with these pens. https://docs.google.com/spreadsheets/d/1etZuCPMF_1R9Dqve1cjddmehn4sQjYg6UFLP2b_n2Pw/edit?usp=sharing. What’s Included? Contents – 1 Ti Pocket Pro pen – 1 pen box (w/instructions and video link under the lid) – 1 Schneider Gel 0.4 black gel ink refill (installed) – 4 spare high-strength o-rings (just in case you ever need them).