8 Premium ball stud brackets (mounting screws included)+ Designed for a perfect fit (for 10 mm ball sockets); base diameter 1-1/8", overall height 11/16", center to center spacing 18 mm, ball stud size 10 mm Great for RVs, campers, and home or shop projects; Fits gas springs (props/struts) with 10 mm ball sockets Premium Automotive Grade Coated Steel.