Features: Engineered for electricians, these magnetic screwdriver bits are crafted from high hardness alloy steel (HRC63°) with anti rust phosphating , ensuring superior durability and secure screw grip. Color coded shafts and length (65mm/110mm) in FPH/ series (4.5 7mm) enable quick identification and compatibility with various electrical fastening tasks. Ideal for professional electricians, maintenance technicians, and handmade enthusiasts requiring precise tools for electrical panel installations or appliance repairs. Optimized for wiring adjustments, circuit breakers installations, and other scenarios demanding rust resistant, magnetic screwdriver bits that prevents fastener drops. The three piece set covers multiple screw head sizes with enhanced magnetic retention, streamlining electrical projects while reducing tool change frequency in confined workspaces. Specifications: Product name: screwdriver tip Alloy Steel Colors: blue, , , red, yellow, green Magnetic: Yes Length: 65mm/110mm Head type: FPH1, FPH2, FPH3, FPZ1, FPZ2, FPZ3 (1 each) Head size: 4.5 mm (FPH1, FPZ1), 5.5 mm (FPH2, FPZ2), 7 mm (FPH3, FPZ3) Suitable for socket switches, circuit breakers, air switches, socket panels, leakage protectors, circuit breakers Package Includes: 3/6x screwdriver note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.