Powerpole connector set, includes Red and Black Housings and 2 - 15 Amp Contacts. These contacts are for 16 - 20 gage wire.
These Powerpole connectors come in one housing size that accomodates three different wire ranges. All contacts are rated at 45 Amps.
The 15 Amp contact indicates a wire range from 16 - 20 AWG.
The 30 Amp contact indicates a wire range from 12 - 16 AWG.
The 45 Amp contact indicates a wire range from 10 - 14 AWG.
This allows for interchangeability between all three sizes of contacts and suggests a general current range.
They also come as a Pre-bonded pair of Red/Black housings. These are in the ARES/RACES standard configuration.