It used for 50kg, 85kg, UIC54, UIC60, 90/91lb, 115RE, 136RE, etc.

Material: 60Si2MnA, 45#, etc.

Type: 5-3/8" for 90lb

Grade: 4.8, 5.6, 8.8, 10.9

Surface Treatment: Plain (Oiled), Black Oxide, Zinc plated, Galvanized, etc.