Morris Products 10048 Ring Terminal, Vinyl Insulated, Blue, 16-14 Wire Size, 5/8" Stud Size (Pack of 100) Vinyl Insulated Ring Terminals - These Wiring Terminals are Vinyl Insulated. Ring terminals are Vinyl Insulated Color Coded insulation for easy identification Manufactured from High Strength Electrolytic Copper Alloy Electro-Tin Plated for corrosion resistance