Small and light aluminum alloy material High hardness, metallic , not easy to rust, lightweight and durable aluminum alloy material is more conducive to heat dissipation The Aluminum Case the metal shell is more conducive to heat dissipation, and comprehensively protects your motherboard. Full package and full protection After repeated testing, each hole is highly matched to the motherboard, and the protection is more thoughtful Perfect suitable for Banana Pi M2 Zero board , all interfaces is accessed. Colour:black Material:Aluminum alloy Size: 65 x 30 x 15MM Package Contents: 1 x Aluminum Alloy Upper Cover 1 x Aluminum Alloy Bottom Plate 1 Set x Screw Accessories 1 x Pin Header 1 x Thermal Pad Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.