100 PCS High Performance Raspberry Pi Heatsink Kit Aluminum and Copper Heatsink for Raspberry Pi 4B, 3B+, 3B, 2B, with thermal conductive adhesive tape.

Multiple size and color options:

Black:
3 Pcs 14mm x 14mm x 4mm aluminum heat sink
3 Pcs 14mm x 10mm x 5mm aluminum heat sink
6 Pcs 9mm x 9mm x 5mm aluminum heat sink

Silver-1:
5 Pcs 14mm x 14mm x 7mm aluminum heat sink
5 Pcs 14mm x 10mm x 5mm aluminum heat sink
10 Pcs 9mm x 9mm x 5mm aluminum heat sink

Silver-2:
5 Pcs 14mm x 14mm x 5mm aluminum heat sink
5 Pcs 14mm x 10mm x 5mm aluminum heat sink
10 Pcs 9mm x 9mm x 5mm aluminum heat sink

Blue:
3 Pcs 14mm x 14mm x 4mm aluminum heat sink
3 Pcs 14mm x 10mm x 5mm aluminum heat sink
6 Pcs 9mm x 9mm x 5mm aluminum heat sink

Copper:
10 Pcs 12mm x 12mm x 1mm copper heat sink
10 Pcs 14mm x 14mm x 1mm copper heat sink