Flat Stick On Eyes are a popular style of eyes, especially on smaller patterns. To apply Flat Stick On Eyes to the fly, use the adhesive back to stick them to the head of your fly then apply head cement or epoxy over the top to permanently adhere them to the fly. 1/8" size includes 88 eyes per pack. 3/16" size includes 77 eyes per pack. 1/4" size includes 64 eyes per pack.