SUPERIOR PROTECTION - Safeguard your valuable 39mm lenses from dust, scratches, and impacts with these durable metal lens caps, ensuring pristine image quality for years to come. ENHANCED DURABILITY - Crafted from high-quality metal, these Urth lens caps offer robust protection against daily wear and tear, extending the lifespan of your lenses and filters. UNIVERSAL COMPATIBILITY - Designed with a standard 39mm thread size (1.53'), these caps are compatible with a wide range of lenses and filters, providing a secure and snug fit. EXCEPTIONAL VALUE - This set includes both a metal top cap and a metal bottom cap, offering comprehensive protection at a competitive price point, making it a smart investment.