Check the listing for details. DUNLOP System 65 Guitar Tech Kit. Condition: New. Listed at 55.57 USD. The System 65 Guitar Tech Kit gives you everything you need to care for your instrument like a pro: Formula 65 Cleaner Polish for the body, Fretboard 65 Ultimate Lemon Oil for the neck and Ultraglide 65 String Cleaner & Conditioner for your strings. The kit also includes two polishing cloths and a Dunlop Pegwinder. 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.