Parameter Product details Product Name: Flying saucer/Grinding steel balls Material: 304/201/316/Aisi1010/ aisi1015/Q235 SIZE: 1*3mm,2*4mm,4*6mm,5*7mm,3.5*5.5mm,4.5*7mm,6*8mm,8*11mmect Hardness: stainless steel ball HRC26-30; carbon steel ball HRC55-60; Production Standard: ISO3290 2001 GB/T308.1-2013 …