1. Offset design: Removal of the oxygen sensor. The offset design helps you reach oxygen sensors in hardtoreach places compared to standard keys. This oxygen sensor wrench is intended for use with a 3/8inch drive ratchet or a breaker bar. quality and durable tool for professional or DIY use for lambda sensor keys. 2. 7/8inch sixpoint socket: Oxygen sensor offset key, 7/8inch (22 mm) sixpoint socket with cutout for cable clearance. Suitable for heated and nonheated oxygen sensors. This product is a brand wrench used to remove heated and unheated oxygen sensors from cars for lambda sensor keys. 3. tool: Tool for removing the offset oxygen sensor socket, this tool helps with the emissions and mileage of your car. The sensors endure the harshest environments and may require some elbow grease to remove. However, this oxygen sensor socket can save your knuckles and time for herramienta sensor oxigeno. 4. quality materials: Oxygen sensor wrench, quality and durable for professional or DIY use. This oxygen sensor wrench is designed for use with a 3/8inch ratchet or breaker bar. The slotted design of this socket allows you to remove oxygen sensors with the wiring harness still attached. This oxygen sensor socket is also offset and compact, providing extra leverage even in hardtoreach areas.