This is a set of brackets for the build plate holder by KRYO3D that have locking tabs to hold secure to the riser.  Original riser and spool holder by Sanja 3D on MakerWorld.  Original locking design by KneezInTheBreeze.  I just printed the top bit of the plate holder to verify fit.  This is just the brackets and not the plate holder.

Riser: [https://makerworld.com/en/models/1079722-side-mounted-spool-holder-p1p-p1s-x1c?from=search#profileId-1307939](https://makerworld.com/en/models/1079722-side-mounted-spool-holder-p1p-p1s-x1c?from=search#profileId-1307939)

Locking spool holder:  [https://makerworld.com/en/models/1079722-side-mounted-spool-holder-p1p-p1s-x1c?from=search#profileId-1750389](https://makerworld.com/en/models/1079722-side-mounted-spool-holder-p1p-p1s-x1c?from=search#profileId-1750389)