Tackform Aluminum 20mm Ball to 17mm Ball Adapter | for Use with GPS Devices That Utilize 17mm Ball Connections | Compatible with Garmin

Snaps right into my existing cellphone mount. Seems 17mm is the standard size.The products are absolutely first class. Fit and finish is excellent. Function is flawless. Customer service is just without peer. I won't bother to mention why I contacted customer service, because it's kind of dumb, but I can tell you that Tom (everybody raves about him, and they are right) not only resolved my issue, but when I mentioned an unrelated issue he shipped a product to me for free to address the problem. Just not enough good things to say. Customer for life. No, this isn't a sponsored review. It's just that for the last two-plus years it has been so rare that anyone, anywhere actually puts out a great product at a good price and executes outstanding customer service that I am more than happy to shout it from the rooftops.TL;DR - Freakin baller.Amazon comment reviewer: I'm going to post this comment on multiple products. Please don't flag it as a dupe.

This product is awesome. It performs very well and when added with their other products it was exactly what I needed for my needs. As pictured I used it for my cell phone, garmin, and for my forward road camera on my rv dash. The trackform 20mm Aluminum Ball to 17mm Ball Adapter measures approximately 1 11/16”(1.6875”) in length. (the ends are flat) Center ball to Center ball approximately 1 1/8”(1.125”) in length. The ball adapter is aluminum and has a slight texture from machining which helps when tightening everything down. None of my equipment moved from their starting position during my driving trip. Once your tighten everything down the ball adapter stays in place. I use the Trackform arms as well. For the price. I already have purchased three and see myself buying more in the future.

Very well designed. The ball is a better fit into the Garmin magnetic dock than Garmin’s.My GPS no longer droops.And I can reach it now

I had picked up a Bulletpoint Mounting Solutions mount for my Jeep JK and they use a 20mm ball. The mount that I had on the back of my ham radio faceplate was for a 17mm ball. This product helped me to use the mount and have a rock solid platform for my radio. It's a solid, great quality product. This is definitely not a cheap plastic ball mount. You will be happy with it.***********************************************************************************************************************************************I rely on reviews when I make purchases so I put a lot of time into reviewing everything I buy on Amazon for personal and my business. Please show your appreciation by clicking the "helpful" below when it asks if the review is helpful!!!

I bought a auto clamping charging phone mount for my Jeep of Wish. $10, works great. However it took a 17mm ball and the Jeep mount I bought had a 20mm ball. I didnt even know they made different balls, so I bought this ball adapter and a double headed 20mm extension and my phone is rock solid and doesnt move at all. I wish I found this a couple years ago when I bought the Jeep.

I needed this adapter to attach a phone mount (that uses a 17mm ball) to an extension arm (that uses a 20mm ball), and it worked perfectly. All aluminum means it's heavy and strong, and the best part of this adapter is that the metal balls do not warp or flatten out when you tighten the clamps (unlike a plastic version). Worth the extra cost over plastic for sure.

quality product works perfect

Kinda pricey... maybe something made of plastic could do the same thing, but it's still cheaper than most new mounts. I use it with a Bulletpoint mount in my wrangler for a magsafe charging mount. Articulates great and holds fast. You'll never say, "I wish I got a better quality adaptor", because I doubt it exists.