12-10 Gauge yellow insulated vinyl locking fork/spade terminals. Made from a tin plated copper base terminal covered in a vinyl (PVC) insulation. Tapered wire entry for easier wire insertion. 'Locking' mechanism holds terminal in place around the mounting stud or screw. Works great with terminal blocks. Available in mounting sizes of #6. #8, and #10. Temperture rating of 221°F (105°C). Voltage rating: 600 Volts.