Double HH introduced the original hitch pin with the red plastisol coated head and handle and were still setting the bar high. High-tensile steel construction. Heat treated for increased strength and wear resistance. Hitch pin clip included. Select sizes also available in yellow, green, blue and black. Hitch pins can be purchased with Lanyards. With the red plastisol coated head High-tensile steel construction Heat treated for increased strength and wear resistance Hitch pin clip included Select sizes also available in yellow, green, blue and black Hitch pins can be purchased with Lanyards Usable length 4" Shaft diameter 3/8".