Feature:This heatsink is designed for cooling transistors, diodes or voltage regulators (TO-220 components).Aluminum heatsink can be applied on 3D printers, IC, electronic, computer's chip component heat dissipation or anywhere you need an efficient heatsink. Specification:Heatsink Material: Aluminum AlloySize 1: 20 x 15 x 10 mm / 0.79 x 0.6 x 0.4 inch (L*W*H)Size 2: 17 x 15 x 10 mm / 0.67 x 0.6 x 0.4 inch (L*W*H)Size 3: 16 x 15 x 7 mm / 0.63 x 0.6 x 0.3 inch (L*W*H) Package Content:10 x Size 1 Heatsink10 x Size 2 Heatsink10 x Size 3 Heatsink30 x Blue Silicone Pads30 x Screws30 x White Plastic Insulators1 x Plastic Storage Box
