12 WG to 10 WG x 1/4" Insulated Ring Terminals RTERM-207 (6 pcs.)

Diameter: 1/4"
Material: Metal/Plastic
Head Style: Ring
Nominal Size: 7/16 Ring
Style: Insulated
Type: Ring Terminal
Wire Size: 12-10 Gauge

Box of 6.

An electrical connector that makes electrical contact when a bolt or screw is passed through the ring end of it.