T-Zerrnech 7-piece spanner set - Rust-resistant finish: The electroplated bright finish provides an attractive look while protecting the wrenches from rust. - Seven sizes included: 8 mm, 10 mm, 12 mm, 13 mm, 14 mm, 17 mm and 19 mm, for a total of 7 pieces. - High quality steel and grip: Made from vanadium steel, with knurled handles for a non-slip, comfortable grip. The knurling enhances control during use. - Durable construction: Precise welding and heat treatment deliver reliable strength and long life. - Wide compatibility and applications: The T-Zerrnech can be used with any type of socket and supports a variety of applications. It is suitable for sockets, rotary drives, hex drives, and other common drive systems. Use scenarios: - Automotive maintenance: loosening or tightening bolts in the engine bay or under the vehicle where multiple metric sizes are needed. - Bicycle repair: adjusting components such as cranksets, pedals, and headset parts that require different sizes. - Home projects: assembling furniture, repairing appliances, or performing general mechanical tasks that involve standard bolts and nuts. This description preserves the original brand, models, and functions while presenting clear, benefit-focused information in a concise, professional tone.