CobraTec Trapper Hidden Release Automatic Knife White Bone. The handle is comprised of textured bone with steel bolsters and comes with a drop point D2 steel blade. Push the bolster up to deploy the blade and push the bolster up again to release the lock. The Trapper has been around for many years and CobraTec is excited to add a bit of modern to this knife by making a hidden release auto. This blade is made of D2 steel and must be kept clean, dry and lubricated when not in use to offer you a lifetime of use. Patent Pending Satin D2 Blade Bone Scales 3.125 Inch Blade 4.25 Inch Handle 7.375 Inches Overall Hidden Release Weight 4 Ounces