Features: Copper protective for tube while enhancing your tube amplifier's aesthetic appeal with oxidation resistant construction. Precise engineered copper ensuring heat dissipation and electromagnetic shielding for vacuum tubes, featuring compatibility for 12AU7 12AX7B 6N3 6N6 12AT7 ECC88 ECC81 ECC82 ECC83 6922 6N1-P models. Ideal for audiophiles tube amplifier enthusiasts, and professional protective for delicate preamp components. Perfectly safeguards vacuum tubes for home hifi systems, studio recording setups, or sound equipment displays requiring both functionality and elegance. This tube amplifier shielding combines industrial durability with craftsmanship, transforming essential protective into a visually striking accent for premium sound systems. Specifications: Component:Copper Size:Approx.43x40mm/1.69x1.57inch Package Includes: 1Pc Protective Cover note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.