3-IN-ONE  Professional Grade Pneumatic Tool Oil, 4 OZ Quickly dissolves gum and sludge, and provides rust prevention on all types of pneumatic tools Removes calcium build-up and moisture for improved tool performance Waterproof formula minimizes rust formation under extreme conditions Squeeze bottle design offers control over the amount of oil dispensed. Size is ideal for Automotive, Marine, Construction, and Shop use Marksman Twist Spout makes it easy to use and apply product exactly where you want it