Bars & U bols, J bolts, eye bolts, threaded rods, double head stud bolts etc Raw material: steel, stainless steel, plastics. Size: M6 to M64(1/4 to 2 1/2") Grade: 2, 5, 8, 10 (4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 10.9&120.9), B7, L7, A2, A4 Surface treatment: plain, black, phosphate, nickel, zinc, hot dip galvanized, dacromat, mechanical galvanized, Cr+3