Specification: Origin: Mainland China Product color: Black Product Material: Iron+Elastic Band Packaging specification: About 18x4.5x8cm/7.08x1.77x3.14inch Product weight: 197G Usage steps: 1. Remove the bracket and accessories 2. The strap is tightened and fixed by passing through the fixing hole 3. Attach stick and cut off excess straps 4. Fix one end of the audio strap securely 5. Put on the audio system and pass it through the fixing hole 6. Tighten the straps and stick the stick properly Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 x Speaker Stand Bracket 1. Anti-slip Design: This bicycle bottle rack strap is designed with rubber anti slip pads and elastic straps, which can tightly secure the water cup or speaker to prevent it from falling. 2. Wide Range of Functions: This bicycle mounting bracket can be used to secure water bottles and smart speakers. 3. Adjustable: This mounting bracket is compatible with speakers with a diameter of 5-10cm and a length of 16cm or more, and is easy to adjust. 4. Easy Installation: This bicycle holder can be installed on bicycle frame pipes with a diameter of up to 3.5 inches (bicycles with a beam circumference of 9-30cm).