These were removed from a Korg SP300 but I believe they also fir EC320,SP200,Sp300. Korg SP300 key.
Replacement keys for Roland digital pianos using PHA II Ivory Feel Keys
Replacement speaker for Korg SP250 digital piano
USED Replacement key for Korg SP250 Kronos 73 Kronos 88 SV-1
CVUTOVO 3 Pieces Trumpet Finger Button Caps Small Size Beige Replacement Keys for Standard Trumpet Repair Accessories Musical Instrument Parts for Brass Players
ELAYARD 3 PCS Small Colored Abalone Shell Trumpet Finger Buttons, Musical Instrument Accessories for Trumpet Parts, Durable Replacement Keys for Brass Instruments
Milisten 3pcs Small Finger Buttons for Trumpet Musical Instrument Accessory Lightweight Replacement Keys for Musicians Easy to Use and Portable Blue Sandstone
