The packaging was pretty dented on arrival and had the box even see some slight cracks and it seemed to me as if he would be held together only by the tape properly, as has Amazon clearly make a difference. There was fortunately nothing and the content was also unharmed.
Since then I have almost always trained regularly with them, if I had time & feel like it. Although I initially had my doubts, as some have complained that the bulky plastic discs would have limited the training, but I did not notice, except sit at the one-armed bicep curls in, they are a bit of a disadvantage. Nevertheless, you can perform the exercise but even reasonably well and clean.
What bothers me, however much more the fact that loosen the star-shaped screw at more than 7.5 kilos regularly and you have to follow suit, caution is necessary here. What I also noticed that the threads have been with my dumbbells processed unclean and so impales and tweaks it often when screwing.
The plastic discs feature a hard plastic jacket which was processed very clean with me. The filling is a sand / cement mixture, as far as I know. The weight plates are still tight and that after more than 1.5 years, although me one or the other disc is already slipped out of his hand.
Who has a slightly larger budget to work with and really looking for professional equipment is out of place here but want to train the home for all amateur athletes and youth / need because they simply money, time, or the desire for a fit near missing or do have none and to already have a limited budget, or the fear of ruining the floor with Gusscheiben, I can at the price only recommend this dumbbel ScSports.