Bass Pro Shops XPS Worm and Tube Rattles feature the loudest rattle around. Designed with steel ball bearings inside a vacuum-sealed Pyrex glass chamber, these loud XPS Rattles slide easily into your favorite soft plastic bait. The 7mm tube rattle features a rounded tip and flanged base. Available: 10 pack. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Rattle.