Insulated screwdriver set with tester pen & clear case, meeting all kinds of needs, easy for carrying. Made of chrome vanadium steel,the surface is blackened. It is rust proof,corrosion resistant,high hardness,good toughness,wear resistance and durability. The screwdrivers with ergonomic TPR handle and button,black polishing blade,magnetic tip,improve work efficiency,handle hole design,easy to store. This insulated screwdriver set is most commonly used for small electrical maintenance. Such as car repair,home appliances repair,residential decoration,water repair,electrical installation and maintenance of companies,factories,etc. All the screw head are magnetic,they can help you better control the small screw,to avoid screw in or out of the accidental drop. Specifications: Material: Cr-V Type: Phillips Slotted Torx Hex System: metric Magnetic: Yes Insulation: Yes Notes: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 12X Insulated Screwdriver 1X Handle 1X Tester Pen 1X Case