U-nail 1.Professional Manufacturer 2.SGS attestation 3.custom designs 4.competitive price U-nailMaterial: low carbon steel wire rod, Q195Diameter: 1.5mm 2mm 2.5mm 3.0mm 4.0mmLength: 15mm-40mmSurface treatment: mechanical galvanized, electro galvanized, hot dipped galvanized, polished/bright.Shank: smooth, barbedPoint: diamond, skew pointPacking: 20kg or 25kg per carton with pallets, or as buyer’s ...