Standard accuracy of our products

Sato Tekko offers only the highest quality ball products.

Steel Ball Size Chart

Steel ball sizes based on inches are summarized in the table with inch and millimeter sizes.

JIS standard for steel balls

To ensure that there is no variation in the processed ball, a method of measurement and representation is defined for the ball.

Virtual Factory Tour

Dr. Sphere tells us about the manufacturing process of how steel balls are made.