Bit sizes included: T5, T6, T7, T8, T9, T10, T15, T20, T25, T27, T30, T35, T40, and 1/4AD extension adapter. Material and build: Carbon steel construction with strength and toughness for a long service life. Wear resistant and durable, with easy installation and use. Key benefits: Wide compatibility with Torx fasteners across multiple sizes. Durable, reliable performance for heavy use. Includes a 1/4AD extension adapter for extended reach and versatility. Why you need it: Ensures you have the right Torx bit range for common home, office, and DIY tasks. Reduces time spent searching for the correct bit and improves work efficiency. 23 practical use scenarios: Assembling or repairing furniture and cabinetry at home. Servicing computers, electronics, or other hardware that use Torx fasteners. General DIY projects and routine maintenance around the office or workshop. Notes: Designed for professional or casual use, offering robust performance without unnecessary complexity.