This bus bar set has a 10 battery capcity for parrallel charging for use with6066A smart charger or other parallel chargers.It is constructed with aninsulated fiberglass backboard including 10 pairs of DC charging leads, 8-1/2GA, 72″ long with 300 Amp insulated safety clamps. 300 Amp Clamp rating (4) 52″ AWG cables to connect to charger Wall or bench mountable Microprocessor controller monitors each circuit against over charging, detects bad batteries and high heat build-up in batteries Made in the USA Dimensions: 35″ x 16″ x 6″ Weight: 25 lbs.