Description Seeedstudio Heat Sink Kit Designed for Raspberry Pi 4B (Not Included) Material: Silver Aluminum Offers a four-piece aluminum heat sink kit The Seeedstudio Heat Sink Kit for Raspberry Pi 4B - Silver Aluminum is a four-piece aluminum heat sink kit to cool the chip on the Raspberry Pi 4B. View more What's Included 4x Aluminum Heat Sink Dimensions Specifications Material: Aluminum Aluminum Heat Sink: 4 Note: Raspberry Pi 4B not included