www.sog-knives.net The SOG Trident, model TF-1, is an assisted opening knife that locks using sog’s Arc-Actuator technology. This technology locks the blade more securely and releases easier. Thanks to a special notch in the handle, the trident can cut cords, fishing line and seatbelts without even opening the knife. What’s more? Take a look at the picture and most anyone would agree this is a nice looking blade.