Cool-See Repair Replacement Screws 2 Sets of 10 For Unibody Macbook Pro Retina A1398 1425 1502 All Years (8 Red 2 Blue Screw thread) Package included 2 sets of bottom case screws, total 20 screws Compatible with MacBook pro 13" / 15" retina Two sets bottom case screws to the computer securely for a rainy day These screws packages fit for MacBook pro 13" / 15" retina for repair or replacement