This is a "set" of US GI MIL Spec Adhesive Back on Velcro Brand hook and loop fastener, 1 inch by 12 inches.
The hook side is also known as the "sticky" or "rough" side.
The loop side is also known as the "fuzzy" or "pile" side.
You get both sides, 1 foot of each color you selected. 1 inch wide is commonly used for IR reflective flags, sewn flags, and flight suit name badges.
Manufactured by the Velcro USA Company.