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Tube-O-Lube® 是一種獨特的天然石墨粉形式，已研磨成設計的顆粒分布，以便在摩擦和磨損成為問題的區域進行適當潤滑。Tube-O-Lube® is a unique, natural form of graphite powder which has been milled to a designed particle distribution to allow for proper lubrication in areas where friction and wear is an issue. Designed to lubricate locking mechanisms, firearms, bolt and screw threads, Tube-O-Lube® has also found its way into pinewood derby racing along with various household tasks, hobbies and musical instruments.