• Made of special corrosion-resistant carbon steel for a long service life. • Double-sealed design that effectively protects against dust, water splashes, and impurities. • High precision and low friction allowing for high rotation speeds and smooth operation. • Universal compatibility for skateboards, inline skates, bicycles, scooters, and small power tools. • Standard dimensions of 8 x 22 x 7 mm for easy installation. • The set includes 60 units of the 608ZZ model.