الكرات الدقيقة، كرة فولاذية عالية الدقة، كرة فولاذية 20.638 مم، كرة فولاذية تحمل 22.225 مم، كرة فولاذية دقيقة 28.575، 23.813 مم * قطعة واحدة (20.638 مم * 1 كجم)
Precision design: These ball bearings have been carefully designed to achieve perfect consistency in weight, size and surface finish.
The high hardness of the bearing steel ball increases its value, and it is not easy to break during use
Widely used in:Precision steel ball has high precision, smooth surface,wear resistance and beautiful appearance.steel balls are Widely used in bicycles,casters,door locks,drawer slides and auto parts,etc.