AR Resonance's First Aid, an accessory for wind instruments. Includes genuine rubber bands for attachment (securing). This item is primarily designed for use on the first valve slide of a trumpet, aiming to stabilize pitch and playing feel when attached. Accessories like this inevitably add some resistance, but this tool's method of attachment is exquisite, addressing the concerns of trumpet players in a clever way. Installation instructions are available on YouTube and other social media platforms, so please refer to them when attaching the accessory.