RUKO® SHARK® assisted opening knife featuring lightening quick spring steel liner opening system (S.R.D.S.) for rapid one-handed blade deployment; rubberized black anodized aluminum handle, ambidextrous thumb stud, electroplated locking liner design and a rugged pocket clip. Features a window punch and 1/3 serrated 420A Oxide Finish Stainless Steel  3-1/2” blade, closed length: 4-1/2”