ITEM NAME:18MM Lifting Towing Bow Dee Shackle Buckle D-Ring For Mairne Boat Heavy Duty Description: Made of marine 304 stainless stell for long life, durable to use. Strong corrosion resistance and oxidation resistance, Suitable for freshwater and seawater. Professional boat, pool, outdoor climbing, architecture accessories. Can be used for anchor chain, towing, sailing hardware. Simple design, easy to install. Specification: Material: stainless steel Package Includes: 1 Piece D Shackle Note: Please check as much as possible to make sure the item is the one that you need. Please allow 0.5-1 inch difference due to manual measurement..1 Piece D Shackle. Professional boat, pool, outdoor climbing, architecture accessories. Can be used for anchor chain, towing, sailing hardware. Material: stainless steel. Simple design, easy to install.