The Lisle U Joint Puller - 42910 is the perfect tool for any DIY enthusiast. This versatile tool can be used to remove and install spark plugs, fuel injectors, and other components on a variety of vehicles. The unique design of the Lisle U - 42910 allows it to fit into tight spaces and access hard-to-reach areas. The tool is made of durable stainless steel, ensuring it will last for years of use. With its convenient size and easy-to-use design, this tool is perfect for any automotive project. Whether you're a professional mechanic or a weekend warrior, the Lisle U - 42910 is the perfect tool for the job.