Proprietary technology allows the firing spring to be at rest in both the open and closed positions, drastically reducing wear on the internal firing mechanisms. The contoured chassis handle provides a lighter and more ergonomic feel and comes in a smooth, flat finish.It features a 3.4 inch blade with various blade finishes and styles. The Ultratech features a 5 inch anodized 7075 aluminum step anti skid handle with carbon fiber patch,pocket clip, glass breaker and stainless steel hardware. Dual action thumb slide for automatic deployment and retraction.