Note:This heatsink come without any thermal tape or adhesive tape, we recommend using some glue (here is not included) to stick.Feature:With horizontal and vertical cooling slots.It only take seconds to install, easy to install.Application:Aluminum heatsink can be applied to devices to cool stepper motor and 3D printers. Specification:Color: RedMaterial: Aluminum AlloyOverall Size: 40 x 40 x 11 mm / 1.57 x 1.57 x 0.43 inch (L*W*H) Package Content:1 x Heatsink.