I guess a "ring tag" is probably a ring terminal. They are available in rings and forks and some combination where a ring and a fork is combined.
They are also available in insulated and uninsulated. You pick the screw size and the range of wire. The crimpers necessary are different for insulated and uninsulated wires.
For the insulated wires, there is a piece of plastic, usually blue, red or yellow which is crimped to the insulation and the wire is crimped as well.
An uninsulated crimper really puts a dent in the terminal.
Strain relieving the cable should be done separately if required.
They are also available in insulated and uninsulated. You pick the screw size and the range of wire. The crimpers necessary are different for insulated and uninsulated wires.
For the insulated wires, there is a piece of plastic, usually blue, red or yellow which is crimped to the insulation and the wire is crimped as well.
An uninsulated crimper really puts a dent in the terminal.
Strain relieving the cable should be done separately if required.