17mm to 25mm Aluminum Socket Arm, KALCINTY Length 3.5" Composite Double Socket Swivel Arm Compatible with RAM Mounts B Size 1" Ball 17MM Adapter

Why did you pick this product vs others?:Got this to rig up a camera to clip on to my headrest post and this was perfect. It fit the stated ball joint sizes perfectly.Fit:Fit the respective ball joint sizes exactly as described. Being able to independently tighten and loosen each joint point is extra handy. Ease of installation:Incredibly easy to install.

This thing is ROCK SOLID. A bit heavy overall for what it is but the capability of 17mm to 25mm connection is a rare find, and the sides are interchangeable too, a great design idea. I like everything about this but it's heavy, like 4 ounces but it's totally solid. So definitely get it if you must mate 17mm to 25mm, I don't think there's another identical offering, at any weight.

Prefer the double lock design to rapidly change out ball joints.

This is a great little piece. Just what I needed to convert a 17mm ball to a 1” Ram mount.

Very elusive item to find that will allow a 17mm ball to attach to a 25mm ball. Solid metal construction and even has ball bearing thrust washers on the clamp screws to allow full force tightening.

This ball mount adapter was exactly what I was looking for, going from a 17 mm ball to a 1 in ball. All metal and very sturdy.

Just the right size for me and it’s very versatile. I use it on my motorcycle to hold my phone.