[High Carbon Steel]: Crafted from premium high carbon ball bearing steel, ensuring excellent hardness and lasting strength for demanding applications.; [Spherical Raceway Design]: Features a spherical raceway roller way type that enhances smooth rotation and reduces friction during operation.; [Precision Dimensions]: Engineered with an inner diameter of 12mm, outer diameter of 39.3mm, and thickness of 20mm for accurate fitting and reliable performance.; [Fine Polished Surface]: Polished with high precision for smoothness, minimizing wear and extending the bearings service life for consistent use.; [Durable Craftsmanship]: Constructed with attention to detail and quality to provide durability and long service life, suitable for track guide and bearing ball applications.
What's in the box
1 x Bearings
