Koolehaoda 240mm Professional Rail Nodal Slide Metal Quick Release Clamp,Dual Dovetail Camera Bracket Mount with Double-Sided Clamp can be Rotated 90°, for Camera with Arca Swiss Compatible

Very nicely machined and finished rail. Dual Arca-compatible dovetails fit all of my clamps perfectly. If you need a 9-1/2" nodal rail I'm sure you'd be very pleased with this one. I certainly am.

This macro rail slides easily, but locks when you want it to be stationary. I do manual focus stacking with it, but the rack and pinion type rails are incrementally too fine - takes forever to screw them to the next stopping point. So, this rail is perfect . . . for me. I just scoot it along to each step. If you're expecting something fancy - this is very basic, but very sturdy. The Arca-Swiss type bracket is also very well made and locks positively.

While it is intended to be mounted to a tripod, I mounted it to a dovetail rail on a telescope to allow mounting a camera piggyback so the telescope can guide the camera allowing for extreme long exposure shots of the Milky Way without star trails. It is sturdy enough to support a 600mm lens, and grips tight enough to hold the camera/lens at any angle.

I am using this in a covered Lexan housing on a tripod. My DSLR with battery pack is 2.7lbs. I have an aluminum plate with a timer and LIFEPO4 battery mounted to the plate. So all in all, it is holding about 12lbs. I wanted something I could use to counterbalance the weight and this works great. Very sturdy.

I bought this rail to take stereoscopic 3D photos, so I'm using it kind of "sideways" to how a focus rail is typically used. For my needs, it's been great. It has solid construction, all the hardware I needed (besides a tripod and camera) and doesn't take up much room in my camera bag. It has handy markings for distances and clamps down securely. It is Arca-Swiss mount, which is great for compatibility with other accessories, and comes with mounting plates included. I haven't tried other rails, and I'm sure there are nicer ones out there, but for the money and for what I use it for it's great.

This works perfect for getting closer to your subject while using a tripod which isn't always easy. Easy to use and does what it needs too.

Fantastic works as described well made good materials very good price

I didn’t feel this was as stable as I needed it to be. I sent it back.