As my tests showed this screwdriver set from the Fasteners category is not only poorly made, but also extremely difficult to use. The screwdriver head will not grip screws well and keeps slipping... As a result, it caused damage to the screws and made the job even harder. The only pro could be its affordability. However, it`s not worth it to compromise quality for a few dollars. Stick to reputable brands in the Industrial and Scientific field for better results..