The Auto-Flick Folder Spring - Assisted Opening Technology If you haven't yet discovered the joys of a spring assisted knife, go no further. When you push on the thumb stud to open a spring takes over and propels the blade open. Spring-assisted knives make a great alternative to automatic knives. The blade on this knife is nice quality 440C Stainless Steel. Excellent quality Spring / Torsion Assisted Knife. Push the Blade a Bit on the thumb stud on the blade and it takes over! Fast action and good lock-up. The body of the Auto-Assist is made out of Aluminum. It features a Black/Red Scheme on the handle. The plain edged blade has a smooth black satin finished. The black to red aluminum handle has a textured finished for a grip that won't fail you. Blade Length: 3.75" Closed Length:5" Overall Length: 9"