Features : Specifically designed for repairing mobile phones, laptops,tablets,wristwatches, game systems,cameras and eyeglasses;this high precision magnetic screwdriver kit is all you need to get the job done right. Preferred chromium vanadium alloy steel material that are processed with heat treatment, which make the spanner set high hardness, high torque, and durable. Made of industrial ABS plastic, the packaging box is strengthening break-resistant. With an exquisite and mini apperance, you can easily put them in the pocket, backpack and other occasion. Specification : Material: chromium vanadium alloy steel Set: 23 pcs Box Dimension:190x90x33mm Package Includes : 1 x 23pcs Screwdriver Set