This is an RGB light stick sized for V0.1/Printers for Ants. Priced each.
These are 5v, check your current consumption as you may need a dedicated PSU if you’re adding a lot of lights.
The length of any "matchstick" variant is ~160mm.
Each stick has 5v, Gnd, and Data In on a JST connector. You can add a data out line to either end to go to the next stick, but you can’t daisy chain power.
For more information check Blamm’s repo at https://github.com/VoronDesign/Voron-Hardware/tree/master/Daylight