[FITABLE model] Suitable for 2016-2019 13-inch&15-inch Macbook Pro A1706 A1707 A1708 A1989 A1990, for Macbook Air 13-inch A1932, 2018-2019. [Attention] 1. This product does not contain glue, please prepare the glue yourself, you need to glue the transparent base shrapnel to the base of the keyboard; 2. This product can be applied to letter key cap (A-Z) number key cap (0-9) symbol key cap ( -?)Standard size key caps, not applicable to function key caps (ESC-POWER) directional key caps and other special size key caps (CMD/ENTER, etc.) [Installation Tips] First fix the transparent shrapnel on the keyboard base with glue, then install the white hinge, and finally install the black key cap (do not use too much glue, in case the gasket can not rebound, you can learn the installation video on YouTube) [Packaging] 2PCS Key cap base gasket