Timberline Knives - Part Serrated Assisted Opening Vallotton Kickstart Linerlock Knife: Model TM-1141. 4 5/8" closed linerlock. Black finish AUS-8 stainless partially serrated blade with dual thumb studs. Black Zytel handles with stainless pocket clip. Vallotton/Ochs designed assisted opener. Slide button on handle to switch assisted opening mechanism on or off.