These "moly" filled nylon 6/6 washers have particles of molybdenum disulfide which enhances the surface lubricity and wear resistance over unfilled nylon.
...NO MORE SQUEAKY TRUCKS...
This is the ONLY washer you need on your HST truck. It fits over the hanger post and then the spring sits on top of it. No other washers needed. It's a perfect fit. We still recommend a tiny bit of white Li grease, cause "it be like that".
Sold as a Pair ( 2)