Silver Boat/Ship/Yachts/Marine Supplies 304 Stainless Steel D- Shackle Description: Made of 304 marine 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: 304 stainless steel Size Chart: Size Length Width Diameter M4 17 10 4 M5 20 12.5 5 M6 24 15 6 Unit: mm (1mm=1/25 inch) Package Includes: 1 Piece Stainless Steel D Shackle : Please check as much as possible to make sure the item is the that you need. Please allow 0.5-1 inch difference due to manual measurement. _x000D_