2Pcs Electrician Impact Screwdriver Bit 4" FPH2 Bits 1/4", Black/Green

Made of S2 alloy steel with a phosphated black finish, offering high hardness, wear resistance, corrosion resistance, rust prevention, and durability, and is not easily deformed. The magnetic electric screwdriver features an insulated, waterproof sleeve to reduce the risk of electric shock. This magnetic Phillips bit features strong magnetism and high torque, firmly holding screws and preventing tip breakage or slippage, thus improving accuracy and efficiency. The double-grooved shank design ensures a tight fit and stable operation, effectively reducing drill bit wobble and improving work efficiency. Simply insert the electric screwdriver bits into the tool's chuck and tighten. The electrician bits are specifically designed for electrical repair work, widely used in circuit breakers, cabinet switches, panel sockets, residual current devices, circuit breakers. It is a reliable choice for professional electricians and DIY electricians. Manual measurements may have errors; please refer to the actual product.