Vinyl insulated ring terminals for wire sizes ranging from 22 gauge to 4 gauge. Vinyl (PVC) insulation has a flared entry to make wire insertion easy. Insulation is molded over a tin plated copper base terminal. Temperature rating up to 221°F (105°C). Voltage rating up to 600 volts. Industry standard color coding. Available in small economy packs and in buk packaging. Ring sizes range from #6 stud to 1/2'' stud sizes depending on the terminal. Manufactured in the U.S.A.