Construction building material nails 1)Q195orQ235 2)Length:3/8''-7''(10mm-200mm) 3)BWG:20-4(0.9mm-6.5mm) Common building nailsProduct Specifications: Material:Q235 Carbon Steel Length: 3/8 to 7 (10mm-200mm)Shank diameter : 20-4 (0.9mm-6.5mm)Surface Treatment: polished, galvanizedFinishing: Bright, E.G, H.D.GFeatures: flat caps,round bar,diamond point,bright surface, strong rust-proof.Usage: ...