The Microtech Ultratech D/A OTF knife now comes with a sleek and comfortable handle design for enhanced user comfort. This updated version maintains the same dimensions, hardware, and durability as the "Tri-Grip" variation, but with a gentler touch on your hands and pockets. If you're not familiar with the Ultratech, it's a fully automatic knife featuring a double-action out-the-front mechanism. This means that the blade can be deployed and retracted using the thumb slide. Microtech's Ultratech knife has set the standard for all OTF knives.