Panduit PN10-6LF-L Locking Fork Terminal, Nylon Insulated, 12 - 10 AWG, #6 Stud Size, Yellow (50-Pack) Locks in place for secure connection Fork design provides for fast and easy installation, without the need to remove fastener Metal insulation grip sleeve crimps to wire insulation, providing protection to the crimp joint during high vibration applications Internal barrel serrations assure good wire contact and maximum tensile strength UL Flammability UL 94V-2/HB, maximum insulation temperature 221F (105C)