Tube Tubb - Floating Sifter screen for Metal Detecting.The Tube Tubb Floating Sifter Screen is a clever and highly effective recovery tool designed specifically for water hunting and metal detecting in lakes, rivers, swimming areas, and shallow water environments. Built to float while you recover targets, the Tube Tubb helps detectorists quickly sift sand, gravel, mud, and debris to locate coins, jewelry, relics, and other underwater finds without constantly bending over or losing targets in murky