5.0mm 0.196inch AISI440c Stainless Steel Balls for Toys 0.509g Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre：4.763mm 3/16inch AISI440c Stainless Steel Balls for Switch 0.440g Next：5.556mm 7/32inch AISI440c Stainless Steel Balls for Ballpoint Pens 0.7g
