●The pen barrel is made of stainless steel with solid brass ends, a new design that helps people with Parkinsons tremor and arthritis with their writing ability. The pen has a smooth and intuitive retractable mechanism that is very durable, rugged and masculine; it is a good size to fit in most shirt breast pockets and notebooks. You will be thrilled with the quality of the workmanship, finish, design, material and texture details of this pen that will set you apart when writing in public. ●Standard refills are commonly used in this pen and you can get anywhere super easy to exchange refills. Compatible with Parker refill and other similar refills. Search ASIN: B0936P1YBH for extra refills from SMOOTHERPRO. ●The J-type bolt action by spring loaded is surprisingly smooth for quick and easy use anytime. The mechanism of bolt action is great design when you are stressed at design or daily work, it’s easy to play and very smooth for writing, a real stress reliever for your work or study. (PREGLUED BOLT, BUT ADD SOME THREADLOCKER TO THE THREAD OF BOLT IF YOU NOTICE ANY SIGN OF LOOSE BOLT) ●Stainless steel clip fits in everything - books, pockets, wristlets, and comes with a great presentation black box, it is a great gift set for outdoor professionals, security personnel, police, military, SWAT, family, friends, and a decent multipurpose tactical pen for collectors. ●Search our brands to learn more about our pens such as CNC machined pens, tactical pens, titanium pens, brass pens, carbon fiber pens, fountain pens and other unique pens. Our designers are outdoor experts and tactical specialists, and our products are designed with real needs and wants in mind; at the same time, we hear from our customers every day and from time to time offer solutions to their concerns; your opinion is super important to us!