MUSICAL INSTRUMENT GREASE - This unique product features a nontoxic, synthetic lubricating grease packaged in a convenient, sealable, dispensing syringe. Woodwind and Brasswind applications include: flat springs and tracks (bronze & steel), pivot screws, clamp screws, wing screws, sax neck screws, linkage joints, lever hinges, ball joints, and threads (valve stems, valve caps and screw bells). In addition to superior wear protection and extreme pressure performance, this plastics-safe, synthetic grease is waterproof and helps to prevent rust.