Check the listing for details. 1000 PACK 16-14 Gauge 5/16" Stud Insulated Vinyl Ring Terminals Tin Copper Core. Condition: New. Listed at 66.63 USD. (1000 Pack) 16-14 Gauge Vinyl 5/16" Stud Insulated 100% Tin Copper Core Ring TerminalsUL Listed and CSA ApprovedInsulation has a tapered entry to make wire insertion easierDouble crimp design provides extra pull strength and strain relief compared to traditional wire terminalsVinyl insulation resists deformation when crimped and will hold up to higher temperaturesMade from 100% tin plated copper coreTemperature rating of up to 221°F (105°C).Max voltage rating is 600 volts. Available in the following ring sizes: CLICK HERE 22-18 Red Ring Terminal: #6, #8 & #10 16-14 Blue Ring Terminal: #6, #8, #10, 1/4'', 5/16'' and 3/8" 12-10 Yellow Ring Terminal: #6, #8, #10, 1/4'', 5/16'', 3/8" & 1/2" 8 Gauge Red Ring Terminal: 3/8" These high quality terminals are top of the line & heavy duty vinyl insulated - MADE IN THE TAIWAN. These are not like other terminals made with brass that break or loosen prematurely. These have the highest grade copper cores for maximum conductivity with an electro-tin plating to resist corrosion. The molded vinyl insulation prevents the terminal from pushing out of the other side, which happens with most other terminals out there. These terminals are engineered to hold the strongest crimp.