Voltec 10-00301 Replacement Clamps, 400 Amp, Red & Black Replacement clamps 400 ampere medium duty side/top clamps; suitable with models 10-00273, 10-00275, 10-00281, 10-00280 and 10-00279 Ergonomically design Dual copper jaws; black and red in color No shock top and side post clamps