Features: Controller back clip button attachment, suitable for XB One X S, XB Series S/X. Control for key functions can be customized to the four custom keys on the back clip to make the game experience handy. Comes with a 4-in-1 trigger, enhance gaming experience, allows you to fully enjoy the gaming and immersive yourself. The first-choice equipment for game players. ABS material made, high strengthen and good toughness, durable for long term use. Specifications: Material: ABS Packing Size: Approx. 19x5.5x15.5 for cm/7.48x2.17x6.1 inch Applicable Models: for XB One X S, XB Series S/X Note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Piece Controller Back Button Attachment