4 in set... VERY Thin... Regular Oil... Sticky Thick Gear Oil... and Thick Grease. 3 have metal needle tips and Grease has cap. All are plastic compatible. The Sticky Thick Gear Oil is excellent for gears where you need the oil to transfer itself onto the adjoining gears. It's the consistency of Honey, and stretches itself across the gaps as the gears turn. The Grease is Thick and will be better to store upside down for easy squeeze dispensing. A little expensive for the volume, but is less than some.