This series of resistor kits are contained in SK128B enclosure. By its name, this 128-Bin Resistor Kits use our patented Super Enclosure which has 128 individually lidded and labeled bins for storing up to 128 different types of SMD resistors. The kits are categorized  by the size of the resistors, the number of values/kit,  and the number of pieces/value. Please note that for the  510 value kit, it covers all the E-96 series resistance values; for the 128 values, it covers approximately the  E-24 series resistance values, but implemented by 1% resistors, as opposed to ±5% resistors. For example, our selected resistor value is 2.49Ω,‬ while ‬the ‬original‬  E-24 ‬value‬ is‬ 2.4Ω.‬ Operating the enclosure is easy and convenient so that your time for obtaining a particular resistor is minimized to just seconds.
The kits can easily be placed on a work bench, put on a  shelf, or transported to other sites, and are the best  choice for building prototypes, doing experiments on  new circuits, or reworking printed circuit boards.