Multi bit screwdriver set with a locking arm design that delivers very stable operation, ensuring reliable performance and long service life. Key features - Stable locking arm design for precise bit engagement and durable use - Includes different types of screwdriver bits to meet professional, home, work, and maintenance needs - Multifunctional ratchet wrench and screwdriver set with an ergonomic handle for a comfortable, secure grip - 42 pieces of industrial steel screwdriver bits with continuous heat treatments and carbonation heat finishing for durability; hard but not break, full of toughness What you get and build quality - 42 pieces industrial steel bits engineered for long life - Continuous heat treatments with carbonation heat finishing to enhance hardness and toughness - Ergonomic handle provides comfortable use and secure control during extended projects - Suitable for a wide range of fasteners thanks to varied bit types Practical applications - Furniture and cabinet assembly or repair at home - Appliance maintenance, electronics repair, and general servicing - Automotive or machinery maintenance and other routine work around the shop or garage Key attributes - Function: multi bit screwdriver set with a locking arm and ratchet capability for versatile use - Compatibility: includes various bit types to fit a broad range of fasteners - Size: 42 pieces - Material: industrial steel with continuous heat treatments and carbonation finishing - Performance: stable locking, ergonomic grip, and durable bits designed for tough, long-lasting use