VELCRO(R) and 3M Dual Lock Coins

Coins is industry jargon for 3M Dual Lock or VELCRO(R) cut into a circle. This is helpful for making a uniform size, with no need for scissors to apply you fastener. There are consumer packs with very small quantities, and you can also buy 1,000s or 10s of thousands for such things as point of purchase displays, packaging or arts and crafts.
3M Dual lock will be much more expensive, but has an extremely strong hold. VELCRO) brand fasteners are more cost efficient, but will have less holding power.