Material: The 13pcs Insulated Screwdriver Set is made from carbon steel, featuring hardened tips and surface treatment for enhanced durability and longevityImpact Resistant Storage Box: The set comes with a thickened anti slip and drop resistant storage box that protects users from potential hazards while improving the durability of each screwdriverElectronic pen: Comes with an electric pen, which is convenient for electricians to perform circuit testing and improve work efficiencyProfessional Use: This screwdriver set is suitable for both professional work and home DIY projects. Its insulated material ensures users safe during usePortability: Home Repair Screwdriver Bit is lightweight, easy to carry and store, and comes with a storage box, suitable for use in various work environments Specification: Material: Carbon Steel Color: Multicolor Size Chart: Box Size21.5cmx12cmx4.3cm/8.46inchx4.72inchx1.69inch Package Includes: 1Insulated Electrician Screwdriver Set (Include 13PCS) Note: Please allow slightly errors due to manual measurement and different monitors.