High-quality strong screwdrivers, thick body design, the pole is made of high grade aluminum alloy. Collocated with five different sizes of high quality stainless steel slot type nozzle, respectively are 1.0mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, is full compliance with watches screws used. Users can directly replace and use different size according to need. It has good performance, light weight and high durability, easy to use.