Feature:The heatsink is a special tool for RPI.This heatsink come with ordinary self adhesive, easy to use, strong stickiness.Aluminum heatsink can be applied on 3D printers, IC , electronic, , computer's chip component heat dissipation or anywhere you need an efficient heatsink.Specification:Color: Copper ToneMaterial: CopperThickness: 1 mmSize: 12 x 12 mm / 0.47 x 0.47 inch (L*W)Package Content:10 x Copper Pad Heatsink