Forged stainless steel shackles are polished to a high luster and are stamped with the screw pin diameter. High-Resistance (HR) shackles are forged in 17-4PH stainless steel to handle high loads. They have an ´´HR´´ imprint for easy identification.Specifications: - Shackle pin Ø (mm): 8 mm- Shackle pin Ø (in): 5/16 in- Weight (g): 56.7 g- Weight (oz): 2 oz- A (mm): 25 mm- A (in): 1 in- B (mm): 16 mm- B (in): 5/8 in- Maximum working load (kg): 2330 kg- Maximum working load (lb): 5130 lb- Breaking load (kg): 4650 kg- Breaking load (lb): 10260 lb