These are very finely woven. Opening is roughly 14.5MM. The opening metal is welded to keep the weave from fraying. The weave is very tough to bend. For single relief cases.
Damper pipe; fitting 2-piece damper style exhaust systems. Fits most Type 3s running the stock exhaust system from 1961 to 1971.
*Will not fit later exhaust systems! They require the larger 1-piece style damper.