Add another dimension of attraction to your favorite tube baits with the McCoy Tube Rattles – the loudest rattles in the industry.  Preferred by many professional anglers, the McCoy Tube Rattles are made with high-quality glass and stainless steel ball bearings that generate an ear-bursting underwater pitch. Built specifically for tube baits, the McCoy Tube Rattles easily insert into you favorites, for an extra bit of enticement.