The 3-1/4” Blade shark assisted Great White knife 144S by RUKO features lightening quick spring steel liner opening (SRDS) for rapid one-handed blade deployment. A manual thumb slide blade lock with ball bearing detent helps to secure the blade away for safe carrying, and a rubberized black handle with non-slip texturing. This knife also has a seatbelt cutter and window punch, making this knife useful in any situation.