Introducing the Manhasset music stand lock This gadget can be locked and unlocked with a simple twist. When engaged, it will enable the stand to hold up to 9 times more weight. It's easy to fit and works with every Manhasset music stand model. Stands will still function as normal in the unlocked position. The Manhasset Lifetime Warranty Over the years, Manhasset has continued to research, develop, and innovate new products to meet the needs of musicians, and their commitment to consistent quality has made them the number one choice of many schools, bands and orchestras worldwide. Backing this up, Manhasset offer a guaranteed lifetime warranty on all products purchased from us. They have the utmost confidence in their manufacturing standards, substantiated by years of proof. When you buy a Manhasset music stand, you should never have to buy another stand again. Please note: Proof of purchase required