Small manual 2:1 ratio hand plunger for use on 50ml 2:1 ratio cartridges.
When you have an adhesive cartridge but don't want to buy an Dispenser, this small hand plunger may work for you.
Place the plunger in the back of the cartridge, where the barrels are sealed-off by the small pistons, and then press with your hand to dispense the adhesive.