Z-FIRST High Speed 608RS Hybrid Black Ceramic Bearings for Longboard, Inline Skates, Skateboard, Scooters, Skateboard and More (Pack of 4, Black)

The Z-FIRST High Speed 608RS Hybrid Black Ceramic Bearings are receiving mixed reviews from customers. One user mentioned that the bearings were rusty and not functioning properly. However, another customer, who has tried various types of bearings, said that these were the fastest out of the box and highly recommended them. They found these bearings to be better than well-known brands such as Bones Swiss Ceramics and Bronson G3. Another customer mentioned that two out of the four bearings they received were defective, causing wobbling and decreased speed. On the positive side, another user mentioned that they have been using these bearings for several months with good performance. Additionally, one customer mentioned that they use these bearings in a high-temperature area for 3D printing and have had no issues. Overall, while there are some negative experiences mentioned, there are also positive reviews from customers who found these bearings to be fast and of good quality.