Forged stainless steel shackles are polished to a high luster and are stamped with the screw pin diameter.Twist shackles are forged with a 90-degree twist so the two attachment points can be perpendicular without torquing.Specifications:- Shackle pin Ø (mm):8 mm - Shackle pin Ø (in):5/16 in - Weight (g):52 g - Weight (oz).1.84 oz - A (mm):41 mm - A (in):1 5/8 in - B (mm):17 mm - B (in):11/16 in - Maximum working load (kg):1380 kg - Maximum working load (lb):3040 lb - Breaking load (kg):2760 kg - Breaking load (lb):6080 lb