PENDO DUO Retractable Ceramic Cutter with Ballpoint Pen Precision Cutter Micro Ceramic Blade (Mint)

Works great for quickly opening random supplies at work. I don't like how the pen part works though, it comes out of the clicky bottom via gravity and sometimes pokes your fingers as you push to get the blade out (if you're not holding it straight up and down). For the price I'd prefer a better design.

A great pen/little ceramic knife. It works great. I love the way that the pen works but be careful to not to push the end while it is facing down, the pen part will poke you. It's pretty cool though.

This tip broke upon using the first time opening a plastic toy package...

Does not cut very well - tears on thin paper.