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: BlackMaterial: Aluminum AlloyOverall Size: 7 x 19 x 14 mm / 0.28 x 0.75 x 0.55 inch (L*W*H) Package Content:6 x Heatsink