You get one six pack, approximate size of each sticker is 1.9" x 1.42". 
These are designed to go on the side of a standard AR 15 receiver, just above the magwell.  These will fit on many other different types of firearms other than AR's.  
Available colors:  White, Black, Grey, Tan, Red, Orange, Yellow, Pink, Neon Green, Stencil Vinyl.