Stainless Steel Mini D Shackle, 4mm, Silver Color,for Paracord Jewelry, Marine Tackle-10 Pieces Mini shackle is great for jewelry and hardware Stainless Steel Type 316 Commercial Marine Grade excellent for Indoor and Outdoor. Superior strength & rust resistance over grade 304, galvanized and cast iron. strong and durable D ring shackle used for marine mounting and hardware Inside diameter 9mm,all over length:23mm Weight:7.6g/piece,package:10 pieces