Hi Kevin, we are very glad to hear that our new replacement 16mm to 17mm ball adapter fits your phone holder .Because the ball diameter exist"negative tolerance and positive tolerance",When i know you need the negative tolerance after testing the first sample,we sent the right size to you and it works well for your car phone mount.We produce straight and crooked ball head for option,please check attached pictures. As we have manufactured ball mounts for 20 years+,custom mount it's all we do.So far we have done different size ball adapter like: 16mm to 17mm, 17mm to 17mm, 17mm to 20mm, 20mm to 20mm,17mm to 25.4mm. Which suitable for RAM mounts,Bulletpoint mounting system. Thanks very much for your more support, we can try our best to help you!

Hi mohammadali,we are glad to hear that you have received the magnetic bag and like it.When you would like to place new order welcome to tell me,thanks very much for your great support!