Universal lubricant for strings instruments from Dunlop. Keep the moving parts of your stringed instruments working smoothly with the Dunlop Superlube gel pen. With its flexible spatula tip, you can easily apply superlube gel where you need it - from saddles and nuts to string trees and tremolo parts - and the thick gel will stay put. Dunlop Superlube gel is the safe lubricant for all of your stringed instrument maintenance needs.