1.Famous brand factory 2.Certificate:ISO9001:2008 3 Professional U- bolt and nuts manufacturer 4.Grade:4.8,6.8 Truck accessory M 10-27mm hex nuts for bolts,fasteners bolts nuts1)Certificate:ISO9001:20082)Place of Origin:Fujian China3)Brand Names:Jiajing/Jinliang/U Series4)High quality strength:grade5)Diameter:10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm,27mm,30mm,ect 1/2,9/16,5/8,3/4,7/8,etc6) ...