The units are not adjustable as stated.
Only one hole to anchor to concrete. There should be a slotted hole similar to the Simpsons APB44 to make them adjustable.
The nuts are not Metric or Standard. Somewhere in-between.
The standoffs are too small. They should be at least 1" deep.
There should be 2 flat washers and one lock washer included for each bolt.
The wrench and screwdriver are a joke. No one tried to use these tools before including them in the package
To compete with the Sampson ABU44 you need to make some adjustments
I had a machine shop make changes to make them work for my project.
Customer Service Reply:
Dear customer,
Thanks for your message and sorry about the inconvenience caused.
We are glad to offer you the best service here.
Would you kindly send e-mail to support@vevor.com with your order number and the related photo or video to show the issue clearly please?
We will help you check it and reply you within 24 hours.
Please do not worry. We will offer satisfying solution after we figure it out.
Your any feedback will be highly appreciated.
Best regards,
Vevor Team