The seller asked for a review so here I am. I haven't even taken them out of the shipping box and inspected them. I gave them 3 stars because they are not quality bearings. If you think you can pay 8 euros for 4 good lagers, you are dead wrong. I use them as guides so they should last for years. There are no Timkens or Koyos, so you get what you pay for. I would not recommend them for high speed and/or high load applications such as Mower reels, axles, gearboxes, etc. They should be great for many jobs, but be careful! Price tends towards quality! Much luck