【Identify Clearly】 Each magazine marking band is printed with size and magazine information to help quickly identify 300 BLK Magazine. 【High Quality Silicone】These magazine marking bands are made of high-quality silicone, which is very thick and durable. 【Perfect fit】 The size is 7.62 X 35 mm, fits your magazine perfectly, will be so tight that it won't move. 【Easy to Install】 A few seconds to install, just put it on the magazine and gently pull it to the position you want. 【Package Includes】10 magazine marking bands, which can mark many magazines.