Item specifics: is_customized: Yes Material: Carbon Steel Size: Approx.6.35mm Type: Socket Wrench Size: Approx.11.5x2.5x2.5cm How to use: If you install screws, first gear being transferred this file conversion tool, the screwdriver head alignment screws, and then forced to repeatedly rotate tool handles can be, not like an ordinary screwdriver, the first time would twist the re- alignment screwdriver remove screws twisted in one direction only If you remove the screws, the first gear is transferred to the anti- file conversion tool, the screwdriver head cold screws, and then forced repeatedly turning tool can easily twist the handle under the screws.6.35mm 1/4 1 X Ratchet Wrench Screwdriver (Not include the screwdriver head) Item specifics:Material: High Carbon SteelIs customized: YesMagnetic: NoScrew head size: as showFeatures: Non-slipWith handle or not: YesModel number: ScrewdriverPackage: Under 5PcsType: ScrewdriverScrew head type: as show