Originally Posted by bobdadruma
Chill out Larry, It is just a piece of felt that is anchored on one end inside of the bass drum and tensioned on the other end with a tuning knob.
My first Slingerland kit had one installed in the bass drum.
I did like caddy and I removed it because it was a pain in the ass to keep it from rattling.
I also removed the internal mufflers from all of my vintage toms and snare drums because they simply weren't that good.
Great restoration project and labor of love. At least you will be able to fit heads on the kit's oversized shells with the wrap removed. Here is a picture of the Pratt muffler: