You are buying twenty five (25) NORS Bowman fasteners. They are M6 x 1.00 with 19mm washer black free spinning nuts. These nuts have a 10mm hex and a 19mm captured free spinning washer. These nuts can be used on various Ford, GM and Chrysler vehicles that will take a M6 x1.00 "Metric" nut.
Please note that these are Metric nuts.