Columbia River Knife 5321: The Pilar IV is a twist on your favorite everyday carry. With a larger clip point blade and a thumb slot opening, it keeps the spirit of the original. Features D2 blade steel for excellent edge retention, Ikbs ball bearing pivot deploys the blade smooth, thumb slot for easy one hand opening, Brass stonewashed backspacer, G10 with stainless steel handle combines durability and strength and Frame lock utilizes a thick lock bar to secure the blade. Includes pocket clip.