ITEM NAME:Aluminum Heat Sink TO-220 Heatsink Cooler Cooling for Transistor MOS tube Description: - 1. H-type design enhanced heat sink with fixed post for easy stability on the PCB. - 2. Range: Transistor heat sink / MOS tube heat sink TO-220 - 3. Material: Plastic - 4. Heat sink size: 15*11-21mm, box size: 125*65*25mm - 5. Heat sink 20 + 20 insulating particles + 20 insulating sheets + 20 M3 screws Package Included: 1Pack Transistor heat sink.Range: Transistor heat sink / MOS tube heat sink TO-220. Heat sink size: 15 11-21mm, box size: 125 65 25mm.