Feature: *The special cross screwdriver bit for electricians is made of alloy steel with hardness up to HRC63 deg;. *Phosphating black treatment, more rust proof, more tight screw engagement. *With magnetism, you can work more easily. *Color differentiation, easy to work. *Optional specification: FPH1, FPH2, FPH3, optional length: 65mm, 110mm, 150mm. Specifications: Product Name: Special Cross Screwdriver Bit Material: Alloy steel Color: As shown Magnetic: Yes Optional Size: FPH1, FPH2, FPH3 Optional Length: 65mm, 110mm, 150mm Suitable for: Socket switch Quantity: 1pc Package Included: 1 times; Cross Screwdriver Bit Note: 1.Transition: 1cm=10mm=0.39inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data.