Rubberset foam paint brushes are a great way to quickly get the paint you need and distribute on the desired surface. Instead of using bristles, like a regular paint brush, this one uses foam. The foam will be able to absorb the paint and cover some material like a regular paint brush. You will likely save some money with these type of brushes as they won't waste as much paint as a regular brush might.
A Rubberset paint roller tray is designed to hold paint that is then easily accessible to the painter. The tray itself is made from metal for a durable piece of equipment. While a roller tray was made so that a paint roller brush would be easier to use this can be used no matter what type of brush you are using.