These Uriah Products spade terminals are lined with yellow nylon that shrinks under heat to create waterproof seals that protect your connection. They accommodate 12- to 10-gauge wires and have #10 studs (0.190"/4.826 mm). The nylon insulation is translucent, allowing you to visually inspect your connection. | Uriah 12-10 AWG #10 Stud Heat Shrink Spade Terminals 8 Pack in Yellow