Double Bladed Camo Batman Spring Assisted Opening Knife - TOPHATTER'S ARMORY DEALSKnife It is well built on a solid stainless with metal bolts holding it down while it offers its users a powerful spring assisted opening with each blade. Each blade is made from a thick 440 stainless steel black anodize finish and comes razor sharp. Just assist the flipper on the spine and watch the spring does the rest. It has a liner locking mechanism for a safe opening and closing. The Double Bladed Spring Assisted Camo Bat Pocket Knife sports