This set by M. Prater is a great addition to your collection! Included in this set is one of the 4" Black Matrix Custom Lockbacks, one of the 4" Onyx Custom Lockbacks with Stainless Steel Blade, one of the 4" Obsidian Custom Lockbacks with Brass Liners, one of the 4" Turquoise Custom Lockbacks, one of the 4" Dino Bone Custom Lockbacks with Collectors Edition. You won't find a lower price anywhere!