SafeWaze FS061 Forged Swivel Rebar Chain Assembly, 19". The SafeWaze FS061 rebar chain assembly is designed to be used as a single-person positioning device on rebar forms, and features 2 double-locking snap hooks and a large swiveling rebar hook (designed to fit a Symons Form). Forged steel swivel rebar hook with 2. 55" opening, Forged steel locking snap hooks with 0. 83" opening, 5/0 Twist link chain