yes, you do get a 1/2 round..BUT my local Lowe's does not carry 1/2 round trim..so I had to use what was available.
IF you can find 1/2 round trim in the 1 1/4" diameter, then by all means use that! I would have!
I used insulbrite for one good reason...WARPING....insulbrite shiney side up reflects the heat from the iron back UP into the cloth instead of DOWN into the wood....if you get pine trim and it gets wet..it will warp when you apply heat to it!
The warping is why I chose to make my own. When I asked the lady demoing these at the show what they were made of she simply said wood. I asked about it warping and she turned to another lady and would not answer my question...so...I set about making my own!