Havent put it all together yet. I do want to tell you that this item arrived much sooner because it had been returned by another party. I know this because packages had been opened  part A was bent to point it would not fit to point A1 with square connector.  I love a challenge  to think outside the box, so I will not use connector but instead I will seal with caulk. Give me a few weeks  after building the pergola I will write another review. Im  excited to have received it early even with the defect.