Features:* Made of high-quality S2 steel material, which is durable, impact-resistant, anti-corrosion and sturdy, commonly used materials in hardware.* Magnetic, so it can be fixed securely on screwdrivers and easy to suck screws after use.* Exquisite workmanship, each edge can be accurately locked screws, no damage to screwdrivers and bits for screwdriver, the surface is chrome plated, which provides a smooth and brilliant surface.* 20 different sizes to meet your diverse requirements.* Can be used for handheld or electric screwdriver, electric drills, air drills and other tools.* Hex screwdrivers only, other accessories shown in the picture are not included! Specifications:* Item Type: Hex Screwdrivers * Material: S2 Steel * Color: Black * Length: 50mm/1.9in * Surface Treatment: Black Phosphate* Model:Metric 10PC models are: 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, 6mm, 7mm, 8mm Cal 10PC models are: 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16"* Quantity: 10/20pcsPackage Contents:10/20pcs x Hex ScrewdriversNotes:1. The actual colors 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.2. Please allow slight manual measurement deviation for the data.