Feature: * 1/2'' interface is suitable for most electric wrenches and ratchet wrenches. * Complete specifications, H4, H5, H6, H7, H8, H10, H12, H14, H17 are optional. *Specifications and models are complete, and the sleeve specifications are printed on the bit surface, which has a wide range of applications; * Surface treatment, the whole bit is not easy to rust after surface treatment; * Square hole design with arc drive and inner arc angle design make the locking force stronger and not easy to slip. Specifications: Product Name: Hex Socket Screwdriver Material: Alloy Steel Color: Blue SType: Hexagon Adapter: 1/2'' Length: (Approx.) 100mm/3.9'' Optional Size: H4, H5, H6, H7, H8, H10, H12, H14, H17 Suitable for: most electric wrenches and ratchet wrenches. Quantity: 1pc Package includes: 1 times; socket screwdriver Note: 1. Passage: 1cm = 10mm = 0.39 inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data.