1. Material: high carbon steel, PP plastic 2. Standard: metric 3. Surface treatment: chrome plating 4. CS carbon steel, high frequency treatment, high hardness 5. PP handle, comfortable grip and easy to use 6. The sleeve surface is flat and smooth, wear-resistant and damage-resistant, beautiful and anti-rust 7. Specification: 5/5.5/6/7/8/9/10mm
