5.556mm 7/32inch AISI440c Stainless Steel Balls for Ballpoint Pens 0.7g Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre：5.0mm 0.196inch AISI440c Stainless Steel Balls for Toys 0.509g Next：6.0mm 0.236inch AISI440c Stainless Steel Balls for Chemical Industry 0.881g
