24 in 1 Multi-purpose Ratchet Wrench Screwdriver S2 Magnetic Bits Tools Set DIY Household Repair Tool. Multi-function ratchet wrench, screwdriver, can change at will to adapt to more occasions. 24Pcs Industrial grade S2 chrome molybdenum alloy steel screwdriver heads, with continuous heat treatment process. Each tool undergoes multiple precise quality inspection processes, with strict controls at every stage from materials to manufacturing processes. It is burr-free, flawless, and its precision error is controlled to an extremely small range, ensuring safe and stable use. Due to processes such as anodizing, nickel plating for rust prevention, and electrophoretic coating, the tool surface is smooth, corrosion-resistant, moisture-proof, and rust-proof., Manufacturer: THUJMGH