How do I change my pro-series handles? Do I need bolt cutters?

Okay, I'm trying to utilize my old pro-series chains (the ones I'm in love with and are no longer available) by switching from the double handles they came with to the pro-series single loop handles that I just ordered and are on the way. I thought I'd try to save myself some time and get the existing handles that are welded to the chain with a steel hoop off.

Needless to say, I don't own anything to get that link or even the swivel off. Do I need bolt cutters or find a welder? What do I do???

I know how I'm going to reattach them, but need help getting the existing handles off while keeping the rest of the chain in tact. So far the chisel and hammer, poultry sheers, tiny bolt cutters after holding my lighter to them has barely made a scratch...

Bolt cutters... You can get a heavy duty split ring to attach it, they're more than strong enough for handles, but I don't use them at the head because of the fire and I'm a spiral junkie.

make your own loops, thats the easiest way, just cut the old ones off and get some heavy duty nylon straps or similar and sew it yourself

I'm going to attach it with the heavy duty split ring, I just have to get these off first to limit parts. I damaged one (deep scratches) so I want to get them both off no doubt.