Proform Parts Drag Racing Practice Tree (MPN: 67025C) Fluid & Filters The thermal bi metal blade design The thermal bi metal blade design ensures reliable performance across a wide operating temperature range of 40 degrees Celsius to +85 degrees Celsius Its robust construction and thoughtful design make it a reliable solution for managing electrical connections making this practice tree an economical choice for racers looking to enhance their skills without the need for extensive equipment The Proform Parts Drag Racing Practice Tree is a compact and portable electronic device designed to improve launch skills and reaction times for racers