Blank Brass Challenge Coin Laser Engraving Custom Coins Blanks 40 mm with Acrylic Protection Box for DIY Crafts Birthday Travel Commemorative Collection (10pcs Brass) 10 Brass home_improvement_Apr2026 1mm thick patch covers concerned

1mm thick patch covers concerned areas and protects against external irritation

all parts are stainless steel except for the ring which is nickel plated steel

The thread seal ensures that the hearing protection earplugs are protected from moisture

Zinc Plated Steel & Aluminum

The Cork rubber material is perfect for gasket sealing in the thickness range with its soft

Blank Brass Challenge Coin Laser Engraving Custom Coins Blanks 40 mm with Acrylic Protection Box for DIY Crafts Birthday Travel Commemorative Collection (10pcs Brass) 10 Brass home_improvement_Apr2026 1mm thick patch covers concernedBlank Brass Challenge Coin Laser Engraving Custom Coins Blanks 40 mm with Acrylic Protection Box for DIY Crafts Birthday Travel Commemorative Collection (10pcs Brass) Product Features Brass MaterialThe Custom Engraving Coins Blanks is made of quality brass. solid brass and non electroplated brushed. There may be trace on the surface because of non electroplated brushed. Noted: The surface of the coins is coated with a protectived coating to prevent