The NiSi JetMag Pro 82MAG Magnetic Back Cap protects the rear end of JetMag Pro filters from dust, dirt, moisture, and scratches. Made from durable metal, it offers long-lasting protection, even in challenging environments. Designed for the JetMag Pro magnetic system, it attaches securely with a slim, lightweight design that won’t add bulk. Ideal for storage and transport, it helps keep filters clean and in top condition, ensuring reliable performance over time.