Square Loop PACK OF 4 .Material: shaft pin is made of good quality spring steel and carbon steel, zinc plated to resist rust and corrosion
3/8" Diameter pin heavy duty pin with square wire clip, 2-1/4"(60mm) usable length.
Shape: square and arch retainer wire clip provides a quick latch and added clearance
Usage: the fastener eliminates cotter pin loss and fits most quick release applications
Wide application: use coupler pins for farm, lawn and garden, trailer hitch receivers, and other applications to secure attachments and PTO accessories