Separate buss strips allow both negative and positive connections. Constructed of tin plated brass and ABS. Designed for use with tinned copper marine wire with the same expansion rate to prevent loosening wires and reducing electrolytic corrosion from disparate metals. Maximum: 48VDC, 100A. #8-32 terminals. Installs with two #10 RH fasteners (not included). Gang 20 x #8-32 A 5-5/16" B 1-13/16" C 9/16" D 4-5/16"