Gerber's GDC Hook Knife is much more than a keychain accessory. Instantly ready, the strap cutter will cut a seatbelt during an emergency. Its sleek Zytel® sheath with keychain attachment keeps it secure and always with you. Crafted of 7Cr17 steel with a T6 aluminum thumb grip, the Hook Knife is also ideal for opening clamshell packaging and envelopes. Overall length: 2". Weight: 0.27 oz.