3M Speedglas 9000 Casco per Saldatura Piastra di Protezione Esterna Confezione da 10

Outside protection plate made in USA. From the Manufacturer The Speedglas 9000 standard outside protection plate is designed to protect the filter from spark and spatter. Failure to use an outside protection plate with the filter voids the warranty if spark or spatter contaminates the glass.

eBay