Ontario Spec Plus 2 (SP2) Air Force Survival Knife. The Air Force Survival knife is a multi-use knife designed for a wide range of military, rescue and survival uses. The shortest of the Next Generation Spec Plus Knives and features a very practical design. The blade has small "teeth" (serrations) on the spine of the blade and a bowie style, clip point tip making it ideal for almost any cutting application. The SP2, Air Force Survival Knife is 10.625" in overall length. The 5.5" blade is full tang 1095 Carbon Steel (.1875" thick) with an epoxy powder coating. Features a comfortable Kraton handle with a secure grip and a combination leather/cordura sheath with a lanyard.