Sog Flash II Assisted Opening Tanto TiNi Bolt Lock Knife: Model SOG-00398. 4 1/2" closed. AUS-8 stainless standard edge tanto blade with black TiNi coating and easy open ambidextrous thumb studs. Black Zytel handles. Features SAT (SOG Assisted Technology). This mechanism helps propel the blade open once the operator has initiated the one-handed opening action. Sliding bolt action with piston lock mechanism. Additional safety lock when blade is closed. Lanyard hole. Ambidextrous clip device is easily interchanged and provides a low profile carry. Lanyard hole. Made in the USA.