Bluecell Repair Replacement Screws for Unibody Apple Macbook Pro A1278 A1286 13" 15" 17" 2 Sets of 10 (Not for Retina Display) Package included 2 sets of bottom's body screws 3 x long & 7 x short screw; Total 20 scews. Compatible with Macbook Pro Unibody 13", 15", 17" Not for Retina Display