• Easy for single use, operate by a thread bar to fix on right place.
• Large window on the valve pusher to supply more space to replace the valve collets.
• The size of the valve pusher is 22 φ , it could use with on 12V, 16V, 20V, and 24V engine.
• You do not have to remove the cylinder with this tool, it has saved a lot of manpower.
• Patent.