DIN 478 Square Head Bolt with Collar M8-1.25 X 55mm Steel, Plain QTY: 100 pieces DIN 478 Square Head Bolt with Collar M8-1.25 X 60mm Steel, Plain QTY: 100 pieces DIN 478 Square Head Bolt with Collar M10-1.50 X 90mm Steel, Plain QTY: 100 pieces DIN 478 Square Head Bolt with Collar M12-1.75 X 100mm Steel, Plain QTY: 100 pieces Please advise steel class you are quoting. Please quote EXW