Tackform 20mm Aluminum Ball to 17mm Ball Adapter Compatible with Garmin and Other GPS Devices with 17mm Balls

Snaps right into my existing cellphone mount. Seems 17mm is the standard size.

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 its 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.

The 20mm ball end was under-sized, so would not tighten in the fixture without using electrical tape.

I recently bought some Bulletpoint mounting systems for two of my vehicles. I already had a charging phone holder I still wanted to use but they didnt fit the Bulletpoint system as it came. I needed these adapters and they worked perfect. They have held them great and Im very happy with them.

Bought this to add my Garmin unit to my Bulletpoint mounting system. Works as intended.

The 17mm is the old Garmin size. 22mm is the new size but this a 20mm which fits who knows what? Its made well but...

Works perfectly for the application that I needed very stable fits my mounting options would definitely recommend this product

I mean...its a metal bar w/a metal ball on either end. The only way it doesnt work is if you didnt have the size right. Thats on the customer.

Works good use it in the work vehicle and person

Nicely milled and great finish.