Packed the part comes in a simple blister pack, a manufacturer information is missing.
The carriage is made of aluminum, which is coated with a fairly robust layer. Scratches occur only if large mechanical effects.
Overall, the sled is surprisingly valuable and massive, there are no sharp edges, the complete adjustment range of 10 cm runs without scratching and soft as butter.
A very small amount of play there with the adjusting screw (perhaps 0.5 mm), but with the second screw you can fix the slide, and then it is firmly seated.
Both connections are designed as 1/4 inch running screws that are secured against falling out. They can be optionally with a coin or with the jew. Attached foldable gag use.
About the rubber mat on the top was already much written. In my copy, it is so that it is executed properly, safely prevents slipping and initially emits a barely perceptible smell that you only notice when you zoom comes with the nose closer than 10 cm. Later this smell evaporates.
The connection to the tripod is also done via 1/4 inch; the corresponding threaded hole is mounted in the solid aluminum base. Naturally, you have to be a little careful because you when tightening, because a steel screw can cause the softer aluminum much damage when you tilted during insertion and then attracts violence.
On the stand you can tell what it is the quality of the slide: My DSLR with 70mm close-up lens is firmly and does not wobble. However, I would not get the idea to use an optical system such. B. Sigma 50-500, because at some point has been reached the mechanical load limit of this construction and possibly also exceeded.
Conclusion: Robust, good execution for hobby users who do not need to switch 50 times per day to connect and work with a small to medium sized equipment. Given the price, it then is an unbeatable offer.