Aluminum Heat-Sink, For Package TO-220 / TO-3P / TO-247 Rectifier, Transistor or Regulator IC.Quantity: a lot of 10 Pieces.M3 Screw Hole.Size: 25 x 15x 10mm / 0.98" x 0.6" x 0.4"(L*W*H)Color : Silver ToneWeight: 4g/ piecePlease check the specification table and make sure that the size of the heatsink fits that of your component