Excellent Material:maierke bus bar conductor is composed of copper base plate and stainless steel screw terminal,good conductivity and corrosion resistance.The high-density plastic base and PC materials protective shell,elegant Product Parameters:Maximum working voltage: 300V AC or 48V DC;the thickness of copper bar is 3mm, and it can withstand the voltage of 250A stably Special Design:Bus bar has new design style,optimized performance and more stable use;Can bear large torque,and the bus bar will not shake when the nut is unscrewed;It is exposed sides allow 180° wire lug installation,connect is very convenient and fast Widely Used:Bus bar provides you with smoother wire management and circuit routing,effectively reduce short circuit through large current.And the bus bar is widely used in marine, cars, trucks, yachts,ships, and so on Package Contains:1 Pair 3 x 5/16" (M8) + 10 x #8 (M4) battery bus bar (Red+Black), 6PCS battery lugs,4PCS heat shrink tubing busbar and 15PCS ring terminals Maximum Working Voltage: 300V AC or 48V DC Maximum Current: 250A