Feature: 1. Main Function: This adapter is mainly used to raise the electronic keyboard stand, making it a double tier stand that can accommodate 2 electronic keyboards, which is convenient and practical. 2. Adjustment Range: Can adjust the height to fit most keyboards, with a width adjustment range of 42‑75cm, suitable for most popular electronic keyboards, and has strong compatibility. 3. Durable Materials: The keyboard stand riser is made of excellent metal and plastic materials, which is sturdy and durable, and can withstand heavy electronic keyboards without bending or breaking. 4. Easy Installation: Simply tighten the knob on the L shaped bracket to easily install the extension adapter on the electronic piano stand, and only suitable for circular tube keyboard stands. 5. Portable Design: This keyboard stand riser is lightweight and portable, with detachable design that facilitates storage and transportation, suitable for home practice or stage performance. Specification: Item Type: Keyboard Stand Riser Material: Metal, Plastic Application: Suitable for Most Popular Electronic Keyboards Stretchable Width: Approx. 42-75cm / 16.5-29.5in. Package List: 2 x L Shaped Extension Brackets 1 x Middle Connecting Rod Note: 1. This product is a stand riser only, does not include a double tube keyboard stand.2. Only for round tube keyboard stand, not for square tube keyboard stand.