Mylar Wraps are placed inside the shotcup to protect the barrel from contact with steel pellets. Designed for use with steel sized #2 shot and up. .003" thick.
To use, roll, place in the wad, allow to open before dropping in the shot
Adds a layer of protection for barrels and chokes
.003" thick is for shorter shotcups such as cushioned wads
.010" thick is for regular size wads