http://www.durgan.org/URL/?HSTRY New Type Tomato Plant Support
This support at first look appears to be ideal for supporting tomato plants in the home garden. The ring is 9 inches in diameter and diameter is about 1/8 inch and is stiff and very strong.
One of the sides of the ring can be easily removed to facilitate circling an existing plant, particularly if a support is required lower than the those installed.
The plastic clamp is well made and of strong construction. I use rebar for support, but wooden stakes up to about two inches could be utilized.