Swix has both roller ski spikes that are screwed on by hand and that must be glued on.
There are two different fastening systems for roller ski spikes:
TBS which is screwed on by hand and an older model that must be glued to the pole. The TBS system is the easiest to use. Then you can easily change the spike by loosening it by hand. This is perfect if you break the spike while on the go. You must have a pole that supports the TBS system to use these spikes.
The alternative is a roller ski spike that is attached to the pole with glue.