CALB 20AH PREMIUM BUS BAR SETSCALB 20AH PREMIUM BUS BAR SETS, Bus bars are cnc machined from 6061 aluminum, standard links are 1 2" thick, long folded and back to back links are a massive 1"x1 1 2" for proper power distribution, 1 2" thick end bars utilizing dual rows of lug bolts. The folded and back to back configurations include 1 4" thick acrylic spacers to shield the links and end bars from one each other. Includes m6 cell nuts, lug bolts and balancer screws. ALL DIMENSIONS