DaierTek Bus Bar 12V Power Distribution Block with Cover 5 x 1/4 Studs Terminal Block Max 150A 48VDC Positive Negative for Auto   About this item: Durable Sturdy - The base of the bus bar is made of nylon, which is heat resistant and durable. Also the stainless steel stud terminals are resistant to corrosion, and the tinned copper plate also makes the marine bus bar have low resistance, high current conductivity and superior corrosion resistant performance, effectively enhances the lifecycle of the bus bar. 1/4 Stud Terminal - The battery bus bar terminal block with 5 x 1/4 (M6) studs terminal, which makes the 12V busbar able to accept a wide range size terminal connectors and wires install. And the washer design nuts also makes the contact of nut, wire lug and the terminal block closer, which will be much easier to tighten and safer to use. Rating Dimension - Maximum current: 150A DC, 130A AC. Maximum voltage: 48V DC, 300V AC. The overall dimension of this small bus bar is 4.2in x 0.9in x 1.1in.       PRODUCT DIMENSIONS 150A bus bar, and its thickened copper base plate can apply to max 48V DC circuits. 1/4 (M6) STUDS BUS BAR Each bus bar includes 5 x 1/4 terminal studs and a pair of mounting hole screws.   WASHER DESIGN NUTS The washer design of the nuts can increase the contact area between the studs and the copper bottom plate, which makes it safer to use. NYLON PROTECTIVE COVER   MADE OF HIGH QUALITY MATERIAL Stainless steel studs, tinned copper base, making the terminal block low resistance, high conductivity and corrosion resistance. EASY TO WIRE NEATLY