Package includes 4FT boat anchor chain,2 shackle with lock rings; Note: item not include anchor; This item all parts made of marine grade 316 stainless steel,they can be used in fresh water and saltwater; Anchor chain OD is 5/16 inch(8mm), shackle OD is 3/8 inch,5/16′′Chain ...Package includes 4FT boat anchor chain,2 shackle with lock rings; Note: item not include anchor; This item all parts made of marine grade 316 stainless steel,they can be used in fresh water and saltwater; Anchor chain OD is 5/16 inch(8mm), shackle OD is 3/8 inch,5/16′′Chain Breaking Load :7600lbs ; 3/8′′ Shackle Breaking Load:9200lbs; As our unique design on the shackle with a locking ring, the anchor will never be lost even if the bolt pin loose; The boat anchor lead chain function: it protects your anchor line from chafe caused at the seabed;keeping the angle of pull on your anchor parallel to the bottom. Deck Man Anchor Chain It is perfect for your boat, providing superior strength and protection. Specification: Material:316 Stainless Steel Anchor chain OD: 5/16 inch(8mm) Shackle OD: 3/8 inch Size: 4FT Package Included: 1x Boat Anchor Chain 2x Shackle with Lock Rings About Deck Man: Our company specializes in producing stainless steel products, Under strict process control and with advanced technology, our products have high quality and excellent workmanship.