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: BlueMaterial: Aluminum AlloyOverall Size: 9 x 9 x 12 mm / 0.35 x 0.35 x 0.47 inch (L*W*H) Package Content:10 x Heatsink