From the "Helpful Gadgets For Key Chains" spot....

The famous Inka Pen Returns after 3+ year absence.

The Inka Pen is one of my favorite gadgets. It's small enough to hang on a keychain to provide you with an excellent writing pen whenever you need one. The company Nite Ize that produces the pen had stopped making it in favor of a new pen/stylus combination. But it was bigger and came with a pocket clip so it didn't fit on a keychain. But now the original Inka pen is back. It's engineered to write in all conditions - underwater, at any altitude, in extreme temperatures, and at any angle. And as you'll see on this week's show, with just a few twists and turns you turn it into a full-size writing instrument. The stainless steel split ring lets you to attach it securely wherever you need it. Housed in a durable and lightweight aluminum body, the Inka pen features a replaceable pressurized ink cartridge that gives the Inka Pen its amazing ability to Write Anywhere®. Waterproof blue ink. Dimensions: .378" diameter x 3.95" x .98" (with keyring) Weight: .35oz | 11g. MSRP: $12.00. Available in black, silver and red.

Giz Wiz Video about this pen: https://youtu.be/dNiLphEdZx4  

Nite Ize Company Link: https://www.niteize.com/product/INKA-Key-Chain-Pen.asp