Designed to clip to the rim of any size of can, it has integral magnets to securely hold the brush ferrule, allowing paint, etc., to flow from the bristles back into the can, making brush clean-up much easier. One magnet keeps the brush above the liquid in a full can, and the other grips it vertically for when the liquid level is lower.
Molded from durable ABS, it even has a metal tab for opening cans. Much more secure than balancing a brush on the can rim!