Item Type: Trombone Slide Cream_x005f_x000D_Material: Oil and plastic 1PROFESSIONAL QUALITY: Trombone expansion tube oil is a professional grade lubricant designed to keep the trombone slide and move smoothly and easily 2DURABLE AND EFFECTIVE: The lubricant is formulated to ensure long lasting protection and smooth operation of trombone expansion 3PROTECT INSTRUMENT: The lubricant protects the trombone slide from wear and tear caused by frequent use, helping to extend the life of instrument 4PRACTICAL AND USEFUL: Trombone slide soild lubricant bring great rust preventive, and good corrosion resistance 5MUSIC LOVERS GIFT: Trombone slide solid grease is an important music instrument, can be used as a great gift to your friends or music lovers