Onguard Mastiff 8019LP 4Ft Noose chain
10mm - 3/8" diameter hexagonal hardened steel security chain with a noose ring on one end and strong mini U lock
The advantage of a noose ring setup is less chain length is needed to cover the same distance.
The mini U lock comes with 5 keys and a high security cylinder. The shackle is dead-bolted in 4 places.