The 128-Bin Super Enclosure SK128B is the world's only storage solution with 128 individually lidded bins for safely enclosing your SMT/SMD components, including SMT/SMD resistors, SMT/SMD capacitors, SMT/SMD inductors, ICs, etc. Each of the 128 bins is covered by a top lid, which is held in place by a foam pad that applies pressure to ensure that all lids are securely closed. This innovative design allows the enclosure to tolerate strong vibrations and shocks without risking the components inside leaking out.