This is for

10 Sets

 TO-220 Heat Sink Kits

in 5x10=50 Pieces:

Aluminum Radiator with a Pin at the Bottom for Installation into Circuit Board      10 Pieces  

Approximate Measurements:

25mm x 15mm x 10mm  

1" x 9/16" x 3/8"   

Biger size for 

fast and more Heat transfer

Insulation Clear Mica Pad                       10 Pieces

Paste Thermal Compound                        10 Pieces

Screw                                                             10 Pieces

Washer                                                          10 Pieces