[Usage Size]-The screw extractor set contains 6 different sizes: 1#/head diameter 2.7mm/use range 4-6mm; 2#/head diameter 3mm/use range 6-8mm; 3#/head diameter 4mm/use range 8-11mm; 4#/head diameter 5mm/use range 11-14mm; 5#/head diameter 8mm/use range 14-18mm; 6#/Head diameter 10mm/Usage range 18-25mm. [Quality Materials]-The screwdriver set is made of high-quality steel, durable and strong. The products are fully hardened, not easy to rust, and have a long service life. [How to Use]-Carefully choose the screwdriver that matches the size of the screw to be extracted. Avoid overheating by taking periodic breaks during the extraction process. Patience and caution are essential for this delicate operation. [Complete Sets]-The set includes all 6 screw extractors, equipped with a storage box that can be placed according to the model, so your screw extractors are always organized. A complete solution for all your extraction needs. This kit is essential in your toolbox to ensure reliable