Marine-Style Lead Battery Terminal Clamp 3/8" Stud for Quick Power Connect-Disconnect Marine-style top post battery terminal 3/8" stud with wing nut allows for quick power disconnect / connnect Solid lead for superior conductivity, fits battery posts up to 3/4" diameter Steel tension bolt, post & wing nut zinc-galvanized for enhanced rust resistance Square-end tension bolt means only one wrench is needed to tighten or loosen. Sold individually