A151 316 Stainless steel. Body Diameter: 3/16, Pin Diameter: 1/4, Inside Length: 7/8, Inside Width: 11/16, Usable Pin Length: 3/8, Working Load Limit: 300 lb Material: A151 316 Stainless steel. Working Load Limit: 300 lbs. Type: Stainless Steel Shackles. Inside Width: 11/16. Pin Diameter: 1/4. Inside Length: 7/8. Usable Pin Length: 3/8. Body Diameter: 3/16.