Aluminum alloy heat sink module cooler fin radiator heat sink with 19 fins for high power LED amplifier, transistor semiconductor devices. 19 fins. Aluminum heat sink module cooler fin radiator heat sink is a passive heat exchanger that transfers the heat generated by an electronic device, thereby allowing regulation of the device's temperature at optimal levels. Made of Aluminum alloy for good thermal conductivity. Reduces the risk of hardware failure due to overheating. 19 fins serve to maximize surface area and provide greater heat transfer. Specially designed for high power household LED light or fish tank LED devices, etc. Dimensions: 11.8"(L) x 5.51"(W) x 0.79"(H) / 300 mm (L) x 140 mm (W) x 20 mm (H). Weight: 20 ounces / 0.57 kilograms. Retails for $25; asking $10 for one heat sink module cooler fin radiator or $15 for two heat sink module cooler fin radiators. Available for pick-up in Mission Hills, San Diego weekdays or weekends.