EDCOR uses Solderless Quick Disconnect terminations on some of thier products. These small metal connectors are called spade lugs. You can connect to the terminals in two ways. You can use a female quick disconnect crimp connector (see below) or you can solder directly to the connector. The crimp connectors can be found at most electronic stores and make it easier to change tap positions on a transformer if needed. The plated connector is RoHS compliant.
EDCOR also supplies a female connector with some products. The specs for the female 0.25" (1/4") connectors are as follows:
Terminal Type: Disconnect
Maximum electrical current: 10A
Maximum electrical rating: 300V max. @ 75°C
Stud / Tab Size: 0.032 in x 0.25 in