Take a piece of normal 'tubing' stuff, or even a solid round 'lace' product.

Dip the stuff in HOT water (not boiling, just hot).

Quickly roll a piece of all thread rod over it. Flip it, and repeat (if you aren't quick enough, you may need to redip in the hot water).

Adds the 'segments' quite nicely. And saves you the time and extra money finding and buying the already segmented product.

Good Luck!

Buddy