LSKD carbon steel balls and chrome steel balls and stainless steel balls, ball diameter range from 1.588mm - 38.100mm, customized sizes are also acceptable, production grade G10 - G1000, material: low carbon steel / high carbon steel / chrome steel / cold heading steel / stainless steel. If you need steel ball products, please don't hesitate to contact us, my mobile phone and whatsapp no. is +8618616693199