The Missouri Tactical Products Super Low-Profile Rail Hand Protectors are 6 inches long and they can be cut to length depending on your need. Rail Protector provide protection to your hand from Picatinny rail abrasion and heat, at the same time giving you a very tactile feel. Covering the top rail of your rifle with Super Low-Profile Rail Protectors will reduce or remove sight picture mirage effect generated by the heat of the barrel. Super Low-Profile Rail Protectors are made out of heat resistant silicone for longevity and durability.