Ban Jing Magnetic Oil Drain Bolt for 50cc, 125cc and 150cc 4-Stroke Engines! Fits Many Makes and Models with QMB139 based 49cc engines and GY6 125/150cc engines. M12x1.50 thread size.

This oil drain bolt has a strong magnetic charge to pick up any metal particles floating in your oil that are too small to be caught by the filter screen.