Great product that enables me to get a consistent edge on my knives.
The plastic seems to be glasfiber reinforced and is quite sturdy.
Despite the instructions stating you need a burr on the underside, I've noticed I don't always get such a bur, just checking by reflecting light of the fresh bevel, I check if my bevel has gotten all the way to the edge and then switch sides.
A few thing you should know:
1. Small knives don't really fit. There is an accesorie from Tormec that can remedy this.
2. Getting the magnetised rod into its socket can be difficult at times
3. The triangular stone holder is smart, but it also connects with most of my handles, resulting in scratches on my handles. I now know to protect those with a bit of tape.
4. The angles indicated on the height adjustments are imaginary, and depends on the blade height (which is logical, the angle indications are not logical though)
5. Setting up the blade in the holder has a big effect on how the blade is ground towards the tip. This could get some more attention in the manual. Playing around with this and checking YouTube videos on this can really help you get a better edge profile.