uxcell 30 Pcs M8x12.5mm Flat Head Closed End Blind Rivet Nuts Insert Nutserts Flange Size (dk*k): 14 x 1.3mm/ 0.55" x 0.05" (D*Thickness); Thread Pitch: 1.25mm; Thread Size: (D) M8/ 0.3" Product Name: Rivet Nut; Material: Carbon Steel, Zinc Plated Weight: 113g; Package Content: 30 x Rivet Nut Main Color: Bronze Tone; Total Length (L): 12.5mm/ 0.5" Body Diameter (d): 11mm/ 0.43"; Application Hole Size (d0): 9mm/ 0.35"