Columbia River Knife & Tool - Assisted Opening Mini My Tighe Linerlock Knife with Black Part Serrated Blade: Model CR-1093K. 3 3/4" closed linerlock. Black coated stainless steel part serrated blade with easy open dual thumb studs. Outburst assisted open system. Black coated stainless steel handles with black Zytel onlays. Black Teflon coated pocket clip.