1.Made of full aluminum alloy material, rust-proof and drop-resistant, lightweight yet sturdy; 2.Built-in spring design, a gentle pull allows for quick disassembly; 3.compact and lightweight, easy to install without any pressure; 4.Strong magnetic attraction for automatic alignment and locking, allowing for quick switching between horizontal and vertical shooting; 5.Provides shock absorption for batteries, ensuring safety and stability; Enhanced dual interface compatibility with an ACE port and 1/4 screw hole on the battery cover Compatible with Various Magnetic Accessories. Compatible with B:for Ace Pro 2 ACE/AC Colour:Black Material:Aluminum Alloy Package Contents: 1 x Battery Cover Only the above package content, other products are not included. Note: Light reflection 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.