Key Pin Shackle - Diameter 8mm - 5/16"Features: Key pin shackle forged in grade 316L stainless steel Opening and closing is done simply by rotating the pin half a turn No risk to lose the pin as it remains attached Outstanding working and breaking loads Applications:Perfect product for halyards or applications requiring to open /close the shackle oftenSpecifications: Materials 316 stainless steel grade Working load (lb) 1760 Breaking load (lb) 5070 Weight (lb) 0.267 Dimensions (see 2nd image): A (inch) 2-21/64" B (inch) 53/64" C (inch) 5/16" D (inch) 43/64" D diameter (inch) 5/16" E (inch) 15/64" F (inch) 3-7/64" G (inch) 1-59/64"