320mm Stainless Steel Rod with 8mm Diameter 8025 12V DC Cooling Fan What safety certifications does it What safety certifications does it have Product Type Passive Aluminum Heatsink Compatibility Raspberry Pi Zero 2W (also fits original Pi Zero Zero W) Material Anodized Aluminum Alloy Thermal Interface Pre applied thermal adhesive pad included Cooling Method Passive convection (no fan required) Color Black anodized finish Fin Design Multi fin structure for maximum surface area Temperature Reduction Up to 10 20 degreesC under sustained load Installation Peel and stick no tools required Weight Lightweight does not affect portability Origin Original Authentic Accessory Warranty 7 day warranty on manufacturing defects Support Email & WhatsApp 24 7 Why Choose This Heatsink