Heat Sink Cooling Module - TOOGOO(R) Aluminum Heatsink Cooling for 4 x 3 W/ 12 x 1W LED Aluminum heat sink cooling Strong thermal conductivity and heat dissipation Oxidation surface treatment Fit for about 12 pieces 1W or 3W LEDs 4 pcs Size (L x W x H): approx.11,8 x 0,99 x 0,39 inches/ 300 x 25 x 10mm