The Technics SX-KN keyboards are well respected in the music industry but sadly Technics no longer manufacture keyboards. This is a rare opportunity to replace some of your broken keys. These keys will fit most models from the SX-KN800 right up throught to SX-KN7000 and come with a free spring. Please check my photos and ensure keys are the same as the ones you are replacing. I advise that you remove the broken keys and check against my photos. The very latest models such as the KN1400 and KN1500 have keys that are joined to make a complete octave. PLEASE PLEASE PLEASE check first. I repair analogue/digital pianos and keyboards and I am happy to advise.