Pro Installer Insulated Studs are a smart choice for marine installers. Increased stainless steel stud length allows up to three large cable lugs to be connected. The clear polycarbonate cover provides insulation/protection, while the snap-out side skirts allow for additional cable entry. The power tapping plate versions provide additional termination points for small cables. Model 14981781 was developed for Yamaha engine installations where positive cable has 10mm (3/8") lug, and negative cable has 8mm (5/16") lug. Generous stud lengths allow securing of three 95mm (3/0) cable lugs. 4mm branch circuit terminals rated for 50A each. 50V DC. 1 7/8" x 1 7/8" x 2 3/8".