Hello Jim,
Thank you for taking the time to submit your feedback to us. I'm sorry to hear about your experience with your 1/2 x 6 Bamboo poles.
All bamboo poles are a natural product and although the diameter is approximate as we state in the product description, the warehouse team is very careful in grouping the bamboo poles with similar diameters together, Natural Bamboo products can vary up to 20% more or less.
I apologize for the inconvenience. Please let me know if you have further questions, I will be glad to assist you.
- Carolina M.