Aluminum heatsink coolingStrong heat conductivity and heat dissipationWidely use for computer PC chipset, power IC, power electric device, LED light devices, etc.Use heatsink adhesive glue to install heatsink .Glue is not included here.Material: AluminiumSize: 20 x 20 x 10mm/0.8 x 0.8 x 0.4 inch (L x W x T)Net Weight: 45gColor: BlackPackage Content: 10 x HeatsinksNote: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.