[Various sizes]: (PH0 , T10.3mm, T25, T15, PH1 , PH2 , T20.6mm), each screwdriver shaft has a double head and is marked with the corresponding model. It is very easy to distinguish and install, to meet the different needs ofwork. Boxed packaging, easy to carry and hard to lose parts. [Strong Magnetic]: Screwdriver head with magnetic adsorption and easy to metal timer like a screw, to prevent loss of parts, easier to use. [Wide Application]: According to different needs, different specifications using a screwdriver, car repair, home renovation, water maintenance, installation and business maintenance,factories, public places, etc. [Design]: The ergonomic handle helps you operate very easily. Special material makes it durable and not easy to break down. Non-slip and comfortable handle, suitable for long hours of work. Hanging hole designof handle, easy to store. [High-grade chrome vanadium]: Chromium is an added alloy steel for chrome vanadium alloy tools, good toughness, high hardness. CR-V high quality bonded steel forging, abrasion resistance, rust, propertiesanti-corrosion and durability.