The Rick Hinderer Extreme Duty Modular Kubotan Pen Deluxe Set is a large tactical pen, designed by knife maker Rick Hinderer. With a total length of 15.6 cm and a diameter of 12.3 mm this is quite a big boy. Hinderer selected a Fisher Space pen refill size U4F as the refill. So a little smaller than the normal refill. It is necessary for the modular character of this Modular Kubotan. You can namely also only use it as a Kubotan, without the pen part. You also receive two different additional caps for the other end. As such you can configure it the way you like. To change it you can use the included pins to easily loosen and secure them. You also receive an Allen key to change the refill.
The cap is attached with a screw thread. The back of the pen is also enhanced with these coarse threads. When you write you add the cap to the back. The side of the pen has been enhanced with massive grooves. With it you have a lot of grip.