Complete your automotive, shop or home project with the ball stud mounting bracket set. Includes 4 Premium ball stud brackets (mounting hardware not included). Designed for a perfect fit (for 10 mm ball sockets); base 2.5" wide, center to center spacing 1", 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 steel, zinc plated for rust and weather protection.