white_helixThese keycaps should fit both. The difference between a Corsair K70 and a normal keyboard is the bottom row. So as long as you're not looking to change the spacebar and it's adjacent keys you should be fine.
white_helixThey will fit on the Ducky Shine 4, as Ducky Shine 2/3/4/5 RGB and Ducky One have a standard bottom row, corsair have a non - standard bottom row so the most keycaps sets will not fit on the corsair k70 bottom row. ANSI Left Shift and Enter will not fit on ISO k - boards. ISO/UK/Nordic keycaps sets will fit on a ISO/DE k - boards with a standard bottom row.
This is my ANSI Ducky Shine 3 with DSA Royal Navy keycaps set.
search
This my ISO/Nordic Ducky Shine 3 with Jukebox SA keycaps set.