This is the VRP Shock Piston Storage Caddy. This convenient plastic case stores 4 sets of 1/8 or 1/10 scale pistons in a small and lightweight form factor that stores easy in your pit box while keeping your pistons in one place.
The caddy features an inner assembly block that can be removed from the plastic box to easily access the shock pistons. To keep things tight, the front latch locks the lid to ensure the lid stays closed, but opens easy when needed. To keep the pistons secure inside, four small oil resistant o-rings slide onto the posts on top of the pistons holding them down.