1 piece 300x 25x 12MM 4 x 3W /12 x 1W LED HeatsinkAluminum Heat Sink Radiator for IC Electronic Chipset heat dissipation Color: Silver Compatibility: Motherboard Chipsets Features: It is designed for LED lighting lamps and lanterns, LED the cylinder light, such as heat dissipation design and production test. Fit for 4pcs x 3W / 12pcs x 1W LEDs module( emitter),total up to 12Watt complete the heat around 5pcs 3w high power LED or the 16pcs 1w high power LED heat Better cooling for LED light if adding a fan , and will cool more leds; Specification Product Name : Heatsink;Material : Aluminium Color : Silver Tone Size (L x W x H): Approx. 11.8 x 0.98 x 0.47 inch / 300x 25x 12mm Package Content : 1 x Heatsink Dimensions: 300x 25x12mm