The DeVilbiss CamAir Desiccant Snake contains special desiccant and has a unique design that ensures maximum compressed air to desiccant contact time. A built in element removes oil and dirt, and it's long and narrow construction features 1” brass ferrules and 1/4” brass thread connectors - not the plastic thread connections that you may find on cheap molded competitive products. This desiccant filter is good to 20 PSIG, and up to 20 SCFM. It's environmentally friendly, too!