■ Resin is not only dressed up the engine compartment, but also functional. Made of resin that does not get too hot even when the engine is hot after riding, and the knob is diamond shaped for easy removal and removal. Because it is hard to heat and remove, it supports quick pit work such as long endurance races, where engine oil is required during racing. ■ 4 resin corners have holes for spring lock for use in motorsports. Spring lock is also available. (see photos) Spring lock prevents loosening or falling off when running on high vibration tuning engines or hard circuits. It is also used in Alteza engines that fight super endurance races. Spring lock springs are not included. When using a spring lock, please purchase the necessary parts such as springs separately, and modify the area that you hang the springs to fit your vehicle.