Description: The screwdriver head has a wide range of applications, and it is suitable for most electric handles and screwdriver handles on the market. CRV material, extended extension rod, environmental protection plastic shell, quick release and storage box. All kinds of screws, a set of solutions, a variety of specifications such as flat/cross/inner hexagonal/external hexagonal and other types of screws are applicable. Applicable to: furniture repair, mechanical repair, door lock repair Professional precision screwdriver set is family essential tools. great gift for father's day, a new house, apartment, dorm, workshop or for the practical people on your list. Specification: Material: CRV+Plastic. Size Chart: 100/105pcs Box Size: 19x4x13cm/7.48x1.57x13inch, 101pcs Box Size: 23x4x15cm/9.06x1.57x5.91inch, 24pcs Box Size: 26x18cm/10.24x7.09inch, 50pcs Box Size: 19x4x13.5cm/7.48x1.57x5.31inch. Package Includes: 1 Piece Magnetic Screwdriver Bit Set. Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.