There are 2 standard types (by pole diameter) that we stock.
1) What's the pole diameter of your bases? You can measure the pole or the opening in the base.
2) Do your poles have "notches" on the ends? If you are missing your poles, does your coupler have a "male" notch?
3) The part & size needed.
4) Is there a manufacturer name on the bottom of the table top?
If you are missing poles, you can look at the coupler to determine the type you need.
Both are metal.
27 1/8" , 39 1/8", and adjustable height poles available.