Description: Wide Range of Uses: This screwdriver set used for home maintenance and disassembly, bicycles, motorcycles, home appliances, desktop computers, machinery and other fields. Quality Material: This screw driver set use hollow octagonal titanium plating process, the material is sturdy and durable. 4 in 1: 4 in 1 screwdriver set, providing different sizes to meet your multiple needs! Convenience: This compatible screwdriver storage design of this upgraded set makes it easy to organize and use the cutter head. Non Slip Handle:This screwdriver tool kit humanized handle hollow design, not easy to sweat, prevent slipping, allowing you to effortless operation.   Specification: Material:Steel+Titanium Plating Size Chart: The Head of the Knife:1.5-2.0-2.5-3.0mm/0.06-0.08-0.1-0.12inch The Handle of the Knife(DxL): 18x105mm/0.71x4.13inch Package Includes: 1 Piece Screwdriver Handle 4 Pieces Screwdriver 1 Piece Storage Box Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!