They come in various shapes and sizes, and some of them even have glow-in-the-dark O-Rings for extra shine.
I started making these in 2003 and each of my designs is original. The "Nukupod" is the grand daddy of them all, followed by the "Micropod", "Alien Pod", "Gothic Pod", and "Turbo Pod".
The sizes range from ø1/4" diameter Micropod to the ø1/2" diameter "Nukupod", "Alien Pod" and "Gothic Pod". The "Turbo Pods" are the largest of them all at ø9/16" diameter. All are right under 2" in length and are machined from solid 6AL4V titanium bar stock.
My inventory on these changes frequently, so if you'd like to place an order please email me for availability.