... 2.material:AISI1010,1015 3.Grade:G1000 G1000 steel balls for curtainsize:6.35-6.4mmmaterial:AISI1010,1015Grade:G1000we ... dong province,we are specialzing in making carbon steel balls(AISI1010-1015,AISI1045,AISI1085 G28-G1000,2MM-60MM),and ... chrome steel balls(AISI52100 G40-G1000,2MM-60MM) and stainless steel balls(AISI304,316,420,440 ... ,Brazil,Canada and korea. 6.35 steel balls for curtain