Material: Steel System: Metric size: 1: 5mm, total length: 90mm, total width: 25mm, diameter: 5mm, net weight: 17g, 1inch 2: 6mm, total length: 102mm, total width: 30mm, diameter: 6mm, net weight: 28g, 1-1/4inch 3: 8mm, total length: 146mm, total width: 38mm, diameter: 8mm, net weight: 68g, 1-1/2inch Surface treatment: mirror polishing Features: knurled handle, increase friction, non-slip. 90 degree screwdriver. Right-angle Phillips screwdriver. The metal parts are made of chrome-tanned steel, the surface is electroplated, corrosion resistant, not easy to rust, not only high hardness, but also good toughness. The surface is mirror-polished, not easy to rust, the middle handle is knurled, and the grip is comfortable and non-slip. Screwdrivers are used in narrow spaces. Small ratchet tool. The fully knurled handle area provides a firm gripping surface, and the one-piece heat-treated steel structure is strong and simple.