10 Pcs 25mm x 23mm 16mm to 220 t-220 audion dynatron 7812 7805 thermal mosfet dissipator sinks transfer coefficient Aluminum Heatsink for Power Transistor FET Heat Sink Extrusion Fins Color : Silver Tone;Screw Hole Diameter : 2mm/0.08" Color : Silver Tone;Screw Hole Diameter : 2mm/0.08" Max.Width(Fit IC) : 13mm/0.51";Overall Size : 25 x 23 x 16mm/1" x 0.9" x 0.6"(L*W*H) Net Weight : 68g. Package Content : 10 x IC Heatsinks If you have problems, please feel free to contact us. Please do not give us negative feedback, this item bring us meager profit