U Bolt, Wood Auger Bit manufacturer / supplier in China, offering 1.4563 Alloy28 DIN975 Threaded Rod, DIN934 2.4660 Carpenter 20 Alloy 20 Uns N08020 Hex Nut, 2.4660 Alloy20 ISO4032 Nus N08020 Hex Nut and so on.