PS4 Back Button Attachment，PS4 Controller Adapter ONLY for PS4 Slim/Pro ,Dominator Dualshock 4 Controller Adapter with MODS & Elite Paddles
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PS4 Controller Adapter Back Button Attachment 
https://www.amazon.com/vdp/165f935609f14da2b6ac0e488b366458?ref=dp_vse_rvc_0
AOLION
{"Package Dimensions": "7.95 x 4.76 x 1.3 inches", "Item Weight": "3.5 ounces", "Item model number": "PG-PS1010", "Date First Available": "September 30, 2020", "Manufacturer": "AOLION"}