3/8" Tower Chain Compares to p/n 685206. This chain has a large welded hook.
Replacement Chief Fuzion Tower Ram Seal Kit - Frame Machine
Replacement Chief Style Pinchweld Clamp Jaw - G3 Clamp
Replacement Chief Style Pinch Weld Clamp Assembly - G4
Replacement Chief Style Frame Anchoring Stands - Generation 4, Single unit.
Replacement Chief S21 Auxiliary Tower Ram Seal kit - For Chief ram 693847
Replacement Chief Frame Machine Tower Chain 1/2 IN S21 replaces Chief 602870