The high-quality stainless steel bearings we ordered have proven to be an exceptional product in the Bearings category of Power Transmission Products. Based on our own experience, these bearings have provided us with smoother and quieter operation in our industrial machines. The huge pro is their durability and resistant to corrosion. However, the only minor con is the slightly higher cost compared to other bearings in the market. Overall, highly recommended for any industrial and scientific usage.