The Nite Ize DoohicKey Key Chain Hook Knife has a dual-bladed design that makes it a versatile everyday-carry item for your key chain. The hooked edge is designed to easily open boxes without damaging the contents inside while the smooth blade is ideal for most common cutting tasks. Designed with the features and durability of larger folding pocket knives, it offers a two-inch locking stainless steel blade housed inside a lightweight aluminum body. This hook knife uses high-quality, corrosion-resistant 420j2 stainless steel with a high-hardness level (51-54HRC), allowing it to retain sharp edges. The included S-Biner MicroLock allows you to quickly attach, detach and secure it to key chains and other anchor points.