Schrade Viper OTF Actuator Tanto - $37.59 MPN#: SCHOTF8TB QUICK SPECS CLOSED LENGTH5.25"LOCK TYPESLIDE OVERVIEW The Schrade Viper OTF Actuator Tanto features a 3.5" AUS-8 stainless steel tanto blade with a black-coated finish. It’s a manual out-the-front with a slide actuator and a secondary safety