The Performance Tool precision screwdriver set is a must-have for any DIY enthusiast or professional mechanic. With its upgraded design, you can enjoy higher lumens and improved functionality. The oversized ergonomic non-slip handle provides optimal comfort and maximum grip and control. The set comes with 30 bits, including 14 precision bits and 16 standard bits, allowing you to tackle any task with ease. The dual-size bit driver for 1/4 inch and 5/32 inch precision bits is stored in a convenient organizing case, making it easy to access and use. Plus, the power switch is positioned near the working end to reduce accidental on/off, ensuring smooth and efficient operation.