The bit retention systems ensures secure fastener grip during vertical/overhead repairs, while color coded sleeves enable quick identification in fast paced work environments Crafted from corrosions resistant steel, the bit withstand heavy duty use while the compact 15.5x14x4cm storage case keeps tools organized during mobile repairs Ideal for professional technicians, gadget enthusiasts, and household users needing tool for frequent device maintenance and precisions tasks This screwdriver set features 31 interchangeable bits (0.8 10mm) and a 180° ratcheting mechanism, offering versatility for electronics repair and DIYer projects with its space saving multiple angles operations Perfectly tackles confined space operations in smartphones, laptops, appliances, and automotive components where traditional screwdrivers fails, Manufacturer: HUAJINGKEJI