Features: 1. Versatile Applications: With 7 different sizes available, this O2 sensor wrench removal tool set is versatile enough to fit most vehicle models. 2. Durable Material: This oxygen sensor removal socket tool is forged from C h r o m i u m alloy, ensuring high hardness, high T O R Q U E, and a long service life. 3. Innovative Design: This tool set features a concave edge that allows for quick insertion of six sided screws and nuts into the socket, reducing the chance of slippage and ensuring a secure grip. 4. Convenient Use: This 7 piece oxygen sensor removal socket tool set is designed for easy use, offering a quick, efficient, and safe way to remove or install oxygen sensors. 5. Ideal for Vehicle Maintenance: Perfect for all types of vehicle related maintenance work such as removing or installing oxygen sensors, which is a must have for all vehicle owners. Specification: Item Type: Oxygen Sensor Removal Socket Tool Material: C h r o m i u m Alloy Color: Silvery Base Size: 3/8in——10mm / 0.4in, 11mm / 0.4in, 12mm / 0.5in, 13mm / 0.5in, 14mm / 0.6in 1/2in——17mm / 0.7in, 19mm / 0.7in Package List: 7 x Wrench 1 x Base