Labelle 102 Plastic Compatible Gear Lube is a versatile lubricant with a number of uses. Can be used on exposed gearboxes on model trains (all scales), RC models, slot cars, bicycles, fishing reels and any other mechanism with an exposed gearbox. Use Labelle 106 Grease W/PTFE for enclosed gearboxes. 1/2 ounce bottle with applicator tip. Insider Tip - A little goes a long way. Over lubing will collect dust and dirt and shorten the lifespan of the mechanism.