... :M24*83*L Shape:Flat square Grade:Ordinary Standard,10.9 Carbon steel U clampU Bolt,U clamp,U screw Features:Certification ... ,1.75mm,2.0mm,3.0mmMaterialmild steel,45#steel,35#steel,40Cr steel,etcHigh quality strengthgrade8.8,9.8,10.9shaperound,flat round,half-round ...