VEVOR Chain and Binder Kit 3/8in-1/2in, Ratchet Load Binders 9215lbs Working Strength, Ratchet Binders and Chains, 3/8in x 10ft Chains with G70 Hooks, for Truck, Tie Down, Hauling, Towing

Yes, it includes 4 ratchet load binders and 4 chains.

There's no information about being DOT certified, but i can tell you this chains are super strong i pulled a 30k pound truck with 2 chains way more than certified in my opinion.

Yes, it does.

El peso total del producto (incluyendo el tensor de cadena y la cadena de transporte) es de aproximadamente 44,5 lbs (unos 20,2 kg).

We use them for our equipment and haven't had an issue