SOLVED it is a shift boot retainer for manual transmission 2005-2014 mustang. No one in my family owes said car, not sure I even know anyone with said car. Sent us by mistake.

SR Performance Shift Boot Retainer for Ford Mustang 2005-2014 https://www.amazon.com/dp/B08D9NMVV5/ref=cm_sw_r_cp_api_glt_fabc_AkedGbZ04EHAB