Check the listing for details. DUNLOP Formula 65 Fingerboard 01 Cleaner & Prep (4 Fl Oz). Color: see description, Condition: New. Listed at 12.51 USD. The first step in a two-part cleaning system: This formula gently removes unwanted dirt and residue from your fretboard to maintain the optimal feel and sound of your instrument. Then Fingerboard 02 Deep Conditioner ensures that your instrument sounds and plays in its best condition. All of our items have a 30-day return policy without explanation. Notes, reading and software are excluded from the exchange. The General Terms and Conditions of Zoundhouse GmbH & Co. KG apply. The European Union provides an online platform (OS platform) for the out-of-court settlement of consumer disputes: When purchasing multiple items: Add the items to your shopping cart and select “Request total from buyer” at the top right. If you intend to buy multiple items: put them into your shopping cart and choose.