110 in 1 update screwdriver set: this screwdriver set has 90 update different screwdrivers and 10 update stable and precise repair tool. High-quality screwdriver set: the bit set uses chrome vanadium alloy steel, the hardness is 55-60HRC. The carrying case uses PP material. Robust update holder is rust-proof and precise. Environmentally friendly, non-toxic and non-slip. HIGH QUALITY BITS: Made of chrome vanadium steel, wear-resistant and break-resistant chrome vanadium steel means higher strength, durability and wear and tear resistance. In addition, rust-proof, easy to clean and everything neatly packed in a storage box. The magnetic bit holder makes it easier to pick up screws. Emergency Tool Kit, Compact, Portable and Organized:All tools and accessories need only one storage box. Each bit has a name which prevents confusion and mess. The set is only approx15.5 x 9.5 x 4.5 cm in size and can be stored in (computer) bags, backpacks, suitcases, lockers and more.