General description Made of high-quality steel and ceramic, these 16 miniature bearings are designed for inline skates and skateboards. They are low noise, reliable, and engineered to enhance speed while maintaining efficiency. Technical specifications Size: 11.7 x 8.5 x 2.2 cm Material: Steel + Ceramic Package Contents: 16 x bearings Measurement allowed error: +/- 1-3 cm Usage These bearings are specially designed to run smoothly with low friction during operation, making them ideal for inline skating and skateboarding. Regular maintenance with lubricating oil can prolong their lifespan. Other information Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.