"Our new Friction Caps are a lower cost alternative to our original hanging tubes - priced at nearly HALF the cost! The difference between them is the closure of the caps. The original tube has two slots cut into the sides which fit over raised bumps on the cap. Our NEW Friction Caps securely LOCK into the tube via a raised ridge around the bottom of the cap. This streamlined design eliminates the need to punch holes in the tube, resulting in lower production costs - which means lower prices for YOU!"