Fangrui Product Details 1. Endurable Materials: Crafted From High-grade Chromium Vanadium Steel And Carbon Steel Material, This Screwdriver Bit Set Is Sturdy And Safe, Ensuring Long-lasting Performance. 2. Increased Efficiency: Ensure Precise Screw Driving With Our Screwdriver Bit Sets Uniquely Designed Bit Heads, Preventing Slips Or Damage To Screws. Perfectly Matched Screw Holes And Built-in Cutter Enhance Work Efficiency And Quality. 3. Wide Range Of Uses: With 50 Pieces, This Screwdriver Bit Set Is An Ideal Tool For Various Disassembly And Repair Work For Families, Cars, Electronics, And Mechanical Needs. 4. Excellent Present: This Screwdriver Bit Set Makes A Present For Special Occasions Like Thanksgiving, Christmas, And Birthdays. Whether For Men Or Women, Its The Ideal Practical Present To Add To Any Toolbox. 5. Travel-friendly Convenience: Comes With A Portable Storage Box, Which Has Fixing Grooves Inside, That Can Effectively Prevent Batches From Being Scattered Or Lost. Colour:as Shown Material:steel Package