More and rust . The contact between the speaker and the bracket is protected, reducing friction and cushioning, and extending the service life of the speaker bracket Anti slip straps and cushion design. The bottom of the bracket can be fixed with three anti slip straps, and there is a silicone anti slip gasket at the bottom of the bracket, which firmly holds the product and is anti slip and anti fall suitable for bicycle/boat railing/crossbar/frame and other scenarios. You can also hang some accessories, such as drinks, water bottles, kettles, etc. Strap or screw fixation, adjust the length of the strap as needed. The bottom of the bracket can be fixed with three anti slip straps; Fix the bracket to the screw hole of the bicycle kettle bracket with screws, loosen the fixing screw at the bottom of the bracket, and adjust the width of the bracket to approximately 30mm, better fixing the speaker to the corresponding car pole. Color:Black Material:Metal+Cloth Package Contents: 1 * Bicycle Speaker Fixing Bracket Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.