4 Stainless Steel 5/16" Studs & 3 Stainless Steel Screws (#8-32) Making This Busbar Suitable For a Variety Of Applications | Nickel Plated Brass Contact Plate For Optimal Current Transfer And Weather Resistance | Stainless Steel Hardware For Extreme Conditions Including Use In Marine Environments - Detachable Cover Included To Protect Connections | Measures approximately 1 3/8” Wide x 1 7/8” Tall x 6 5/8” Long | Rated For 250 amps @ 12 vdc / stud connection, 20 amps @ 12 vdc / Screw connection & Max Volts = 48 vdc