joinfworld heavy duty 500a bus bar waterproof power distribution block with 4*5/16"(m8)+2*3/8"(m10) studs 48v dc automotive marine battery terminal distribution block with cover - negative&positive 500a 4 x 5/16"(m8) + 2 x 3/8"(m10) studs is up for auction in Automotive. The current bid is $1.00, 98% below the $62.09 MSRP, in As Is condition. This auction has ended — similar items appear in live auctions regularly.