Features: Internal speaker set left right speakers module replacement for Retina 15.4" A1286 (Please check your machine before your purchase) Replacement to replace your old damage Internal speaker left+right speakers module. With back cover screws, screwdriver and foot pads set, please install it by professional technician. Do not need to change new machine, just buy this item and replce your damage Internal speaker set, let your Device work again again. Products- are fragile, easy to be damage during shipping. So if there are any questions, please contact us first, we will try our best to help you. Specifications: Compatible Model: For Retina 15" A1286 922-9308 923-0085 Compatible Year: 2010-2012 Part NO.：MC371 MC372 MC373 MD103 MD104 MD318 MD322 MC721 MC723 Quantity: Left & Right Speakers with Screws and Foot Pads Package Includes: 1Set Left + Right Speakers Kit for A1286 note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!