1、Applicable Model: The new laptop bottom cover replacement is designed for MacBook A1278 laptop, perfect replacement for the damaged part of your laptop. 2、Precise Hole Positioning: Laptop bottom cover is precisely cut out to fit perfectly on the part of your laptop that needs to be replaced. 3、Rapid Heat Dissipation: Laptop bottom door cover is designed with heat dissipation holes to reduce temperature during continuous operation. 4、Durable Material: Made of premium aluminum alloy material, sturdy and durable, not easy to damage, long service life. Replacement parts are tested before shipment. 5、Installation Note: Please replace it under the guidance of professional technicians to avoid unnecessary losses. Silver color replacement parts enhance the stylish look of your laptop.