====== POM? What's that? ======
{{tag>FAQ}}

Delrin, or POM (an abbreviation for PolyOxyMethalate), is the material from which your X and Y axis wheels are made of on your Neptune 4 (excepting the Pro model, which uses linear rails.) POM is a low friction plastic, with high wearability, and is impervious to most oils and solvents making it an excellent choice.