Feature:This heatsink come with thermal conductivity adhesive ,which can provide good cooling results..Aluminum heatsink can be applied on 3D printers, IC , electronic, , computer's chip component heat dissipation or anywhere you need a efficient heatsink.Specification:Color: Silver ToneMaterial: Aluminum AlloyOverall Size: 5 x 35 x 35 mm / 0.2 x 1.38 x 1.38 inch (L*W*H) Package Content:5 x Heatsink