1. Super strong and durable Made with precision zirconium oxide, these screwdrivers are resilient and longlasting, delivering reliable performance over extended periods. 2. Wide range of applications Suitable for frequency circuit adjustments, these screwdrivers come in various specifications and sizes to accommodate different components such as inductors, semivariable capacitors, semivariable resistors, and parts from major brands. 3. Insulated nonmagnetic Designed for safe and efficient use, these screwdrivers are insulated and nonmagnetic, providing protection against electric shock and preventing interference with sensitive components. 4. Precision tip sizes Each set includes four screwdrivers with precise tip dimensions. The CD15T features a 3x0.4mm flat slotted tip, the CD20T has a 1.8x0.4mm flat slotted tip, the CD25T comes with a 2.6x0.4mm flat tip, and the CD100T offers a 2.6x0.4mm Phillips tip.