Product Specification -304 Stainless Steel Quick LinkSize: M4, M5, M6, M8, M10Reliable power - non rusting, high-strength metallic structure, burr free, water resistant and corrosion-resistant, with stable operating load capacity304 stainless steel - The chain short connector is made of 304 stainless steel, which has high hardness, durability, wear resistance, corrosion resistance, and isn't easily deformed. Do no longer rust when used in damp environments or fresh water.The characteristic of screw lock hook - quick chain hyperlink is screw lock. You can turn the screw to fasten it, which is to create a permanent or temporary secure connectionExtremely humanized.Widely used - these heavy-duty quick hyperlinks are perfect for every single day life. It can be used for chain connectors, fence doors, swings, puppy chains, sunshades, fitness equipment, or placing chandeliers. Quick link chains can also be used for outdoor actions akin to camping, fishing, hiking, tourism, and many others