Material: Rubber Color: Black Quantity: 4Pcs Compatible Model: For Pro A1278 A1286 A1297 13" 15" 17" A1278 13" For "Core 2 Duo" 2.0 13" (Unibody) For Pro "Core 2 Duo" 2.26 13" (SD/FW) (09) For Pro "Core 2 Duo" 2.66 13" Mid-2010 A1286 15" For Pro "Core 2 Duo" 2.4 15" (08) For Pro "Core 2 Duo" 2.53 15" (SD)(09) For Pro "Core 2 Duo" 2.66 15" (09) For Pro "Core 2 Duo" 2.66 15" (SD)(09) A1297 17" For Pro "Core 2 Duo" 2.66 17" (09) For Pro "Core 2 Duo" 3.06 17" Mid-2009 For Pro "Core i7" 2.4 17" Late 2011 For Pro "Core i7" 2.5 17" Late 2011 Compatible Model No: MB466LL/A, MB467LL/A, MB467LL/A, MB991LL/A, MC374LL/A, MC375LL/A, MC371LL/A, MC372LL/A, MC373LL/A, MC721LL/A, MC723LL/A, MD318LL/A, MD322LL/A, MD103LL/A, MD104LL/A, MB604LL/A How to use: Remove the bottom case and wipe the dropped needle with a dry cloth to wipe off the dust, but do not get wet. Heat the dropped needle with a hair dryer, when it hotted, stick on the rubber foot directly. until it is cooling, then turn over the bottom case, toast the cylinder with a lighter, after it dissolves, it quickly to let it stuck in the bottom case. Diameter: 1.2cm/0.47" Package includes: 4Pcs x For foot pad , , or are registered trademarks of , Inc. Products are compatible and not endorsed by , Inc. Note: Light 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.