1. The unique guide screw and valve cage design can effectively compress the spring, allowing you to operate the valve lock without hands-on effort 2. The top locking structure can firmly grip the edge of the cylinder cover, with uniform force and no tendency to slip 3. High quality material, durable and sturdy 4. For Dodge 5.7L / 6.1L / 6.2L / 6.4L HEMI engines 5. Material: metal
