Dennis King wrote:I use the same set up and use just food grade tubing.
A little more information might help Dennis
but you're old so we will forgive you.
To expand a little, 1/2" Food Grade Silicone Tubing or 1/2" Braided Silicone Tubing and a Jubilee Clip.
The Malt Miller sells the unbraided 1/2" Silicone Tubing as well as eBay and many home brew suppliers.