AMMO by MIG Accessories - Spare Bottles For Modelling
Item: Spare Jars for Mixes (5 x 35ml jars)

From the Manufacturer:

Store your paint mixes in these jars easily and efficiently. This pack contains 5 ready-to-use 35ml reusable bottles. The transparent container makes them perfect for clearly distinguishing the color and consistency of each mix. These bottles also have a safety cap for a completely airtight seal.