Yellow zinc passivated for corrosion resistance. Self-locking large ring holds pin securely in place but is easily removed. Use in farm, garden, trailer hitch receivers, axles & other applications. Assorted sizes 4.5mm, 6mm, 9mm and 10mm pins. Handy storage case with compartments. Yellow zinc passivated for corrosion resistance. Self-locking large ring holds pin securely in place but is easily removed. Use in farm, garden, trailer hitch receivers, axles & other applications. Assorted sizes 4.5mm, 6mm, 9mm and 10mm pins. Handy storage case with compartments.