high strength metric bolts 1.Size:M4-M24 2.Lenth:16-90mm 3.Standard;DIN933, ... M4-0.7 X 16 , M5-0.8 X 12 , M6-1.0 X 25 , M8-1.25 X 10 , M10-1.5 ... X 16 , M12-1.75 X 30 , M16-2.0 X 45 , M20-2 ... .5 X 60 , M24-3.0 ... X 90 SurfaceBlack, White or Blueness Zinc (Cr.3 or Cr.6), Yellow Zinc, Dacromet, Hot ...