Welding folks and metalworkers, these Fanmao safety chain links are seriously heavy-duty! Made from low carbon steel with a raw finish, these 3/8\ diameter loops are built to handle some serious weight and stress. The inside dimensions measure 4\ x 1-3/8\ while the outside is 4.8\ x 2.1\ with a 7/32\ opening spacing - perfect for various industrial and construction applications. You get 8 pieces in the pack, with each one weighing about 164 grams (total package is 2.99 pounds). These weld-on loops are ideal for creating safety chains, securing equipment, or adding attachment points to metal structures. The raw finish means they're ready for welding right out of the package without any special preparation needed. The quality is solid - consistent sizing, clean manufacturing, and that industrial-grade strength you need for safety applications. Whether you're working on trailers, machinery, rigging, or any project that requires reliable connection points, these chain links deliver. The low carbon steel composition welds beautifully and holds up to outdoor conditions. Having 8 pieces means you can tackle multiple projects or have spares for future needs. The weight and dimensions make them substantial enough for serious work without being overly bulky. Installation is straightforward if you're comfortable with welding - just position, weld, and you've got a permanent, reliable connection point. These are one of those basic supplies that every metal shop should have on hand because you never know when you'll need to add a secure attachment point to a project.