This is a lot of 16 replacement tact switches for the Akai S20 (or REMIX88) 16-bit phrase sampler. These are new, drop-in replacements to remedy button response issues. There are 16 switches which is enough to replace all the heavily used sound pads (sounds 1-16) which are critical for real-time sample triggering.
When purchasing, know that disassembly of the sampler and competent soldering skills are needed for such a repair.
Obviously, this is a listing for repair parts only, and does not include the sampler itself, nor is it a repair service.