? 10MM BALL-STUD BRACKETS - Zinc-plated then Black Powder-Coated for superior corrosion protection.? GREAT FOR PROJECTS - RVs Automotive campers and home or shop projects; Compatible with gas springs (struts props lifters) with 10 mm ball sockets.? DIMENSIONS - 2.5L x 0.68W x 0.75H - Holes located 2 apart on center. Ball-Stud center 0.5 from mounting surface. Image in listing also shows dimensions in millimeters.? FINISH Zinc-plated then Black Powder-Coated. Superior corrosion protection. Each bracket is separately bagged for protection.? MADE IN THE USA These brackets are designed and manufactured in the USA.