Black and red.
The red one holds 5 different types of wire - 5A, 10A, 15A, 20A and 30A. Ratings are stamped into the med material above each type of wire.
The initials JD are stamped at the top.
The black one has four spaces, 5A, 10A, 15A, 20A. Ratings have been scratched into the surface with a sharp implement.
The 20A wire is missing.
The wire is the usual tinned copper, although the tin coating is missing in many places.