Scallions Are Designed To Meet The Needs Of The Knife User Who wants Speed-Safe Technology In a smaller carrying Knife. The Attractive colorations Are Built Into The Durable anodized Aluminum Handles. Opens With Index Finger Opening System Or Thumb Stud. 420HC Stainless Steel blades With 55-57 Rockwell Hardness Rating. Anodized Aluminum Handles In Three Colors. Models 1620 And 1620St Have Injection Molded polyamide Handles, Safety Tip loc And Removable Pocket Clip.