You need to run 3 cables across your cage, one down each side & one down the middle. Put all 3 of the turnbuckles on one end, pre-tighten the cable, then finish tightening using the turnbuckles. 3 pcs 3/16'' 7x19 PU cable, 2200 lb breaking strength. 3 pcs turn buckle and 6pcs 3/16'' cable clamps.
Carabineer: 35 pcs for 20' cage, 70 pcs for 35' cage, 105pcs for 55' cage, random color. Cable: 50ft for 20' cage, 65ft cable for 35' cage, 82ft for 55' cage. Run 3 cables across cage, one down each side & one down the middle.