I forgot the chain and lock that I have for my bike but it costs like 200.00. It's awesome. I used it down here in El Paso before I got my house. I used to chain the bike up to a steel pole under an overhang / outdoor covered parking for cars, people that used regular chains you can get at the hardware stores and locks got their stuff stolen and it was parked right next to mine. The lock taht comes with this chain is like 'pick proof' and smash proof. The chain is actually like an octegon and you can't cut it. We have tried, trust me. The only thing that we figure would cut is is like a plasma cutter or smashing it after its gotten hit with liquid nitrogen!
I'll look tomorrow what it is though.
But I recommend NOT chaining the front wheel. it's still very easily to steal and the cost of a front time is NOT terribly expensive if they want to actually ride the bike and not piece it out. I would suggest, getting the chain I have and putting it around the swing arm or through the rear rim, that's a lot harder and more noticable if someone is trying to take the bike.