Radiator Type: OEM Anti-slip design, useful and practical. How to Use: Remove the bottom case and wipe the dropped stitch with a dry cloth to wipe off the dust, but do not get wet. Heat the dropped stitch with a hair dryer, when it hotted, stick on the rubber foot directly. Press until it is cooling, then turn over the bottom case, toast the cylinder with a , after it dissolves, press it quickly to let it stuck in the bottom case. Shape: Round Compatible Model: for MacBook Pro A1278 A1286 A1297 13 inch 15 inch 17 inch Features: Useful, Unibody Bottom Case, Non-slip Mat Color: Black Material: Rubber size: 2*2cm Package Contents: 4 x Foot Pad for MacBook (Laptop Not Included) Only the above package content, other products are not included. Apple iPod , iPhone , or iPad are registered trademarks of Apple, Inc. Products are Apple compatible and not endorsed by Apple, Inc. Note: 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.