Features: For Banana Pi M2 Zero armor for case, aluminum alloy metal for case robust passive cooling with CPU heatsink . All ports and slots of the aluminum alloy for case can match with Banana Pi M2 Zero board perfectly; Add 40Pin Headers to extend the GPIO pin and insert GPIO cable. Open-case design, don'for t need to worry about affect wifi signal, it is a good for Banana Pi M2 Zero heatsink for case with good heat dissaption Reinforced aluminum material, lightweight and durable, long-lasting stainless With thermal pad to for touch the for shell body for heat dissipation . Specifications: Item: Cover for Case Size: approx 65x30x15mm/2.56x1.18x0.59in Material: Aluminum Alloy Fit for: for Banana Pi M2 Zero Note: Does not include Banana Pi M2 Zero. Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1 Set x Aluminum Alloy for Case for Banana Pi M2 Zero