Description Features: Ratchet Design: The ratchet head can be adjusted in three directions, which is convenient to use. The left and right gears can block the screwdriver head in one direction. Length Adjustable: Screwdriver head automatic chuck, easy to use, length adjustable. Narrow Space: The disassembled screwdriver handle is suitable for use in a narrow working environment. Suitable for Many Occasions: Multiple high-precision screwdriver heads of compact screwdriver can be used for electronic watches, cameras, radios, computers, mobile phones, etc. Screwdriver Head Identification: Each screwdriver head has its model engraved on it, good design for your conveniences. Specifications: Material:Chrome vanadium steel Function: Screwdriver includes: 1 *28-In-1 Ratchet Screwdriver Bit Socket Set