• Universal M18 x 2.5 design fits most small suitcase generators. Compatible with Wen Yamaha Predator Westinghouse Champions and Ai power Generac Pulsar Small Inverter Generator See more details for more models • Most small gas engines do not have an oil filter which allows small particles to circulate while the engine is running. Not suitable for bearings, rings, etc • This is a well formed magnetic chipstick. All internal combustion requires such equipment. Removing iron and steel debris out of the oil prevents all internal moving parts from being scratched or worn out, ensuring the motor lasts longer and works stronger • High Quality Thread is smooth and snug fit. Powerful magnetic pull captures the smallest particles • Note: Dip stick is metal, it will be quite hot, please wear gloves if you want to change oil or check after a little run