20pcs Flat Head Metric Steel M10 Blind Insert Rivet Nut Product Name: Rivet Nut; Material: Carbon Steel, Zinc Thread Diameter: 10mm; Total Length: 21mm Grip Range: 1.0-5.0mm; Body Diameter: 12.9mm Application hole size: 13mm; Weight: 166g Package Content: 20 x Rivet Nut; Color: M10-21L