This is a plastic bottle of general purpose lubricating oil with a spout that extends or retracts to suit your needs. Comes in handy oiling plastic shaft bearings and tumbler motors, but because it is so versatile, you will find yourself using it in hundreds of other ways. Very precise dosage. Put one drop right where you need it. If you use a rotary tumbler, one drop per week on all four plastic shaft bearings is all you should need. Makes a great gift for the mechanic in your house too!