This 10-piece set includes torque driver and tamper-resistant screwdriver bits designed for use with both standard Torx and tamper-resistant Torx screws. The bits feature drilled tips to engage tamper-proof fasteners effectively. They are made of durable chrome vanadium steel and come with foldable keys for compact, easy storage. The holder is corrosion-resistant, ensuring long-lasting performance. The set includes sizes T6, T7, T8, T9, T10, T15, T20, T25, T27, and T30.