This is a "set" of US GI MIL Spec sew on Velcro Brand hook and loop fastener, 4 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.
Manufactured by the Velcro USA Company.