Each pack includes 1 piece raspberry pi quite 30mm 3.3-5V DC fan and 4 pieces copper cooling heat sink set for Raspberry Pi models A, B, B+, 2, 3, 3B+ and 4B boards. These pure copper (4pcs) heatsink include heat conductive adhesive tape for optimum heat transfer. These heat sinks have profiles which are short enough to fit within standard Raspberry Pi cases. These heat sinks kit can be applied in other devices to cool processor, regulators, VRAM VGA RAM, IC Chips, MOSFET SCR, Southbridge, Northbridge etc. Each pack includes: 1 piece 30x30x7mm quite 5v DC fan + 1 piece copper large heat sink: 0.56 x 0.56 x 0.16 inch (14mm x 14mm x 4mm) (L*W*H); 1 piece copper large heat sink: 0.59 x 0.4 x 0.16 inch (15mm x 10mm x 4mm) (L*W*H); 1 piece copper small heat sink: 0.35 x 0.35 x 0.16 inch (9mm x 9mm x 4mm) (L*W*H); 1 piece copper large heat sink: 0.59 x 0.59 x 0.02 inch (15mm x 15mm x 0.5mm) (L*W*H)