Designed to elevate your vessel’s rigging safety and efficiency, the Gloma 5/16" Forged Captive Long D Shackle (Model IM204-I) is the perfect mid-sized solution for securing blocks, halyards, and multi-line connections. Precision-forged from marine-grade AISI 316 stainless steel, this shackle offers exceptional corrosion resistance in harsh saltwater and an impressive working load threshold. Its elongated "Long D" body provides the extra depth needed to easily accommodate thick lines and hardware without binding. Best of all, the clever captive pin design ensures that the pin remains locked within the shackle body even when fully unscrewed, completely eliminating the anxiety of dropping crucial parts overboard during on-deck adjustments.