Based on my experience this product is the epitome of quality and reliability in the Industrial and Scientific category. The 40-piece mechanic socket set is versatile and functional, making repair and maintenance a breeze. The set is organized, making it easy to identify the right tool needed .the only downside would be the price, but the quality and durability of the set justifies the price. Overall, this set is a great investment for any mechanic looking for a reliable socket set..