Alleviates multiple connections to battery terminals by allowing you to connect various power accessories. Electrical power distribution (conducts electricity). Stud design provides direct terminal-to-bus contact for low-resistance connection. Stainless steel studs allow high-torquing for excellent electrical contact. Bus material made of tin-plated solid copper for maximum conductivity and resistance to corrosion . Base material made of flame-retardant ABS plastic.. Continuous amperage of 130-Amps AC, 150-Amps DC. Maximum voltage rating 300-Volts AC, 48-Volts DC. Cover included. 6"x 1.25"x 1.4".