304 Stainless Steel: These quick links are made of 314 stainless steel, which has higher hardness and corrosion resistance than other common alloy steel materials. High-quality hardware can withstand bad weather for a long time and is extremely and safe. Easy to use: Turn the thread clockwise to open and counterclockwise to close. And the extremely smooth thread, it is very convenient to install and remove even if it is closed for a long time. Easy to use: The installation of the chain connector does not require any tools; turn the thread clockwise to open and counterclockwise to close, which is very easy to install and remove even if it is closed for a long time; the working load limit is 648 pounds. Hexagonal thread locking: The locking chain has a special threaded end and screw, which is reliable and convenient; the threaded connection can be tightened or loosened without tools, but its hexagonal design allows for additional tightening with a wrench. Wide Application: Heavy-duty