Features: 1set includes 7PCS metric magnetic nut driver (0.6cm 8mm 10mm 11mm 12mm 13mm 14mm), 7PCSSAE magnetic nut driver (1/4'' 5/16'' 3/8'' 11/32'' 7/16'' 1/2'' 9/16''), 3PCS impact socket adapters (1/4'' 3/8'' 1/2''), 1PCS Magnetic Bit Hold(1/4''), and 3PCS quickly-release extension (65mm 100mm 150mm) The 21PCS Nut Driver Set is a convenient tool for installing and removing nut. Its magnetic feature ensures a secure grip, making your tasks easy. Craft from steel, this nut driver set provide excellent resistance to oxidation and corrosion. It is with multiple size to meet different nut requirements. Suitable for DIY enthusiasts, and home renovators, this nut driver set is perfect for those who frequently work with nut. It can widely used in auto repairs, furniture assembly, and electronic device maintenance. Specifications: Material:S2 Steel 1set includes 7PCS metric magnetic nut driver (0.6cm 8mm 10mm 11mm 12mm 13mm 14mm), 7PCS SAEmagnetic nut driver (1/4'' 5/16'' 3/8'' 11/32'' 7/16'' 1/2'' 9/16''), 3PCS impact socket adapters (1/4'' 3/8'' 1/2''), 1PCS Magnetic Bit Hold(1/4''), and 3PCS quickly-release extension (65mm 100mm 150mm) Package Includes: 1set/21pcs Magnetic Nut Driver(with Storage Bag) note: Please allow 1-2cm errors due to manual measurement,please make sure that you donot mind befores you order. Due to the differences between different monitors, the picture may not reflect the actual item color.