· Size - Bit Type: T6, T15, T6 Bit Diameter: 2mm / 0.08", T15 Bit Diameter: 3.5mm / 0.14", Bit Length: 65mm / 2.6", Total Length: 116mm / 4.6", Screws Type: T6, T15, T6 Screw Length: 6.7mm / 0.26", 9.3mm / 0.37", T15 Screw Length: 8.8mm / 0.35", 11.4mm / 0.45".· Material - The video doorbell screwdriver is made of S2 steel with nickel-plated surface, high hardness, durability, corrosion resistance and wear resistance. The tip of the screwdriver is magnetic, which can firmly absorb the screws during use.· Features - The screw rod adopts a double-headed design, one end is a T6 bit and the other is a T15 bit, which can be easily disassembled and used interchangeably and is suitable for different specifications of screws, ensuring versatility.· Applications - The double-end screwdriver can be used to remove and install video doorbell, video doorbell 2, pro, etc., as well as to disassemble and replace controller, computer, laptop, hard drive, etc.· Notice - Please apply appropriate force during use. Too little force may cause the screws to fail to tighten, and too much force may damage the screws or items.