While we make our hanger links out of heavy duty materials, bullets don't usually care and you will inevitably shoot through them, eventually needing replacement parts. We stock all of the components to either repair or replace your target hangers. It is also a good idea to keep a few extras links or repair parts so you don't have to cut your day short when a link is broken. Part number RH001 is a pair of standard 5/0 chain with S-hooks on each end, same as what is shipped with any A3 hanging target system. RH002 is a 5-pack of link repair couplers.