www.sog-knives.net With a blade powered by SOG Assisted Technology, the SOG Twitch XL Tanto can spring to action with a small push of the thumbstuds or the kick mechanism on the spine. This SOG TWI-211 model has an AUS 8 blade coated with black TiNi, and a black handle made of hard anodized aluminum. For easy transport a reversible pocket clip with the SOG name inscribed is mounted on the end of the handle.