The Coast DX355 features a patented Double-Lock safety switch mechanism which works in conjunction with the primary Liner-Lock to prevent disengagement when the knife is open, even if the Liner Lock is inadvertently dis-engaged. A checkered G10 handle on a stainless steel frame adds incredible strength and durability. Deep thumb notching on the top of the blade and frame adds excellent grip and control of the knife, helping to prevent accidental slipping. A 9Cr18 stainless steel blade will power through the toughest cutting jobs with ease and is easy to sharpen while still holding a great cutting edge. Thumb studs on both sides of the blade make opening the blade easy; right or left handed. Backed by Coast's lifetime guarantee against defects in materials and workmanship.