Originally Posted By: justin
Stix,what's the foam?
Hello justin,

Thanks for the reply.

Its 1/2" dia "backing rod" cut to length. You can buy it at the local hardware store. Its available in 1/4", 3/8", 1/2", 5.8", 3/4", and 1" dia x 25 foot length. Or, you can find it on amazon in 100 foot lengths. That's where I buy it.