NINGBO ZHENHAI JILIAN FASTENER PIECES CO., LTD, one of the leading manufacturesin the line of fasteners in China. Owning the Import and Export License since the establishment, 90% of products are sold to various countries and regions. We can produce standard hexagonal nuts, square nuts, special nuts and the relevant bolts with the super quality! The range is from 1/2 to 2 1/4, grade from 4.8 to 12.9!