I went to Home Depot and purchased the best cable that they sold, another cable that you might look into is one with the name Kriptonite locks and cables (spelled wrong) U have the Idea though. I run it through the square tubing for the slide then to the gen sets, if it rains they are under cover from the rain I also carry a rubber door mat to set them on the help keep them off the dirt.
here is a chain I used for a gate when I was working that never got cut again great stuff a little costly but very cut proof.
http://www.tulsachain.com/asccustomp...odKlizqA<br />
after a little more resurch I found these aditional topics on this lock and chain.
http://www.amazon.com/OnGuard-Beast-...e_sg_ai_-2_t_4
http://www.nextag.com/kryptonite-lock/compare-html
http://www.rogueperformanceproducts....ag&ad=Products
I liked this one the best and this is the one I used for the gate.