Premium Alloy Steel Construction: The bits are made from high hardness alloy steel for durability and wear resistance, guaranteeing long lasting Anti Roll Rings & Keychain Loop: Equipped with a nonslip rings to rolling and a keychain loop for easy attachment, ensuring the tool is always within reach 11 in 1 Multi Function Design: This tool set includes 10 different screwdriver bits and 1 scribing needle, perfect for repairing watches, cameras, radios, computers, and other small electronics to meet daily needs Built In Storage Compartment: The handle features an integrated storage compartment that holds up to 5 bits, making it easy to carry and access tool whenever needed Comfortable Rotating Handle: The ergonomic threaded rotating handle fits snugly in your palm, reducing wrist fatigue and improving efficiency for prolonged use, Manufacturer: ZBIianxer