Speaker Stand Bracket Nylon Sound Box Bike Holder Anti Slip Diameter 1.5-3.5inch Equipment for JBL Bluetooth-compatible Speakers. Secured Hold: The anti-slip drop-proof design and the 2CM hook and loop magic tape provide a secure and stable hold, preventing slippage and accidental dropping. Versatile: The mount can be used to fix both a water bottle and a wireless speaker, making it a versatile accessory suitable for different needs. Easy to Use: The bike cup holder can be quickly secured or removed, and it is reusable. Convenient to install and disassemble without tools. Adjustable Fit: This bike speaker mounting strap is compatible with speakers of diameter 1.5-3.5 inches and is easy to adjust. It can fit various models of speakers. Wide Compatibility: The bike water bottle holder can be installed on the bike frame tube with a diameter of up to 3.5 inches, making it compatible with most bikes in the market.