You will need about 450mm (18") of steel rod or bar, 8-10mm (3/8") diameter. I used 10mm mild steel rebar.
To form it the tools you need:
- hacksaw or some other way of cutting it to length.
- a hammer and something to beat against as an anvil.
- tools to bend it, at least two of: a length of steel pipe and/or a large wrench and/or a vice and/or a clamp.