Rocksteady Cup Holder Mount No tools required; Easily mount your Rocksteady XS speaker to the Universal XS Bar Mount (fits any round bar up to 2" in dia.). Listen to your favorite Music or Radio Broadcast station while on your Bike , pushing baby stroller, side by side and more. Adjustable and Secure; Mount your XS speaker Firmly and Tight to any Round Bar with up to a 2 inch Diameter. 360 degree movement so you can tilt and turn your speaker in any way you want. Telescoping and adjustable 1 year warranty and support; 1 Year no questions asked Warranty means you Contact us and someone from our support group will be more than happy to assist you. More mounts available. Also check out our Universal XS Flat Surface mount and Universal XS Cup Holder mount.