You need "all thread" and some "T" couplings to screw them into.
It should be self explanatory when looking at these items how to make it. If you can't figure it out then you don't want it bad enough. Good luck. If I can figure it out in 5 minutes then you should be able to do it in 2.5 minutes.
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The ONLY ring that matters has curbs!
Train for the streets and adapt it to the ring, but NEVER train for the ring and expect it to work in the streets. These are two different states of mind!