So what the OP is looking to do is prevent his braid from crushing.
OP, why not just take the braid to Home Depot and find out what fits?
Also, the method I've heard of, (but not tried yet), is take copper pipe, drill holes in it, wrap it with thick gauge copper wire, (wrap in a loose spiral), then put all that inside the braid. The copper wire keeps the braid from sitting against the pipe, opening up more surface area on the braid for transfer. Then, the wort goes through the braid, through the holes, and into the copper pipe, where it drains out....