This is the Spyderco Baliyo. Part pen, part butterfly knife, this bad boy's completely legal but can still deliver the butterfly knife experience. Super fun to fidget with. It's a space pen
Spyderco BaliYo - High Performance Heavy Duty Space Pen with Weighted Twin Handles for Dynamic Flipping and Twirling Tricks - Made in the USA - YUS Model | Amazon price tracker /
Amazon.com: Spyderco - BaliYo Twin Handled High Performance Heavy Duty Pen - Black - YCN100 : Sports & Outdoors