Product Name: Zinc Plated Twisted Concrete Nails Model NO.: nail Material: High Strength Steel Type: Concrete Nail, Countersunk Head Standard: DIN, GB, BSW Head Style: Counter Sunk Bolt Groove: No Connection: by Hanner Grade: with Harden Transport Package: in Small Box or Bulk in Carton Origin: China HS Code: 7317000000 Product Description Material: Steel 45# or 60#Head type: CSK head or round headFinish: Zinc/plain/hot ganvinized.Sizes ranges1.6 ×16mm1.8 ×20mm2.0 ×25mm2.5×30mm3.0 ×40mm3.76 ×50mm4.19 ×65mm4.57 ×75mm4.57×100mm