Hook up RC Battery to Electronic Diameter: 2.0 3.0 3.5 4.0 5.5 6.0 8.0MM gold connectors Male x20 gold connectors Female x20 Plug maximum withstand current: 2.0mm banana plug: maximum withstand current of 30A 3.0mm banana plug: maximum withstand current 35A 3.5mm banana plug: maximum withstand current 45A 4.0mm banana plug: maximum withstand current 55A 5.0mm banana plug: maximum withstand current 80A 5.5mm banana plug: maximum withstand current 100A 6.0mm banana plug: maximum withstand current 120A 8.0mm banana plug: maximum withstand current of 130A All parameters refer to the female head of the banana head and the pore size of the inner pores. For example: 2.0mm banana head refers to the female head with an aperture of 2.0mm (normally negative tolerance)