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. Shackle pin Ø (mm)10 mm Weight (g)111 g A (mm)32 mm B (mm)20 mm Maximum working load (kg)3720 kg Breaking load (kg)7450 kg