Features: brand new and high quality 37 piece screwdriver bit set multifunctional in a variety of sizes for wide coverage. Made of S2 steel for high strength. Applicable for various tools includes magnetic extension bit holder and quick release. Can be used for manual electric screwdriver, screwdriver, drill, air and other tools. Magnetic bits holder,easy for you to store the screwdriver bits set , colored bits help keep your tools organized. Professional 37pcs precision screwdriver set family essential tools. Great gift for a new house, apartment, dorm, workshop etc Specifications: Size: appprox 157x66mm Material: ABS+PS+S2 Quantity: 1Set/36pcs Note: Please allow 1-2cm errors due to manual measurement. Due to the difference betweeen different monitors,the pic may not reflect the actual color of the item. Package includes: 1 Set x Screwdriver Tools