This spring is the standard spring used in the Bolt Action Standard, Bolt Action Mini, Side Click Standard, Side Click Mini, Glider, and the Mover (which was also known as the Click). Before 2019 we used a weaker spring in the Gliders than the Movers, but people liked a stronger spring so we are now using this spring in both pens.
It's a spring!!
Just what I needed. Where else are you gonna find a spring for this pen. Glad they have em.