... 50mm origin:Tianjin,China FST18,FST20.FST25.FST30.FST45 FST50 FST black steel concrete nailsmaterial:carbon steellength:18-50mmorigin:Tianjin, ... to peg, and not easy to damage the wall.FST nail seriesPhotoModelsFST18,FST20,FST25,FST30,FST40,FST45,FST50Length18mm,20mm,25mm ... , is the ideal new generation product concrete dowel. Description:FST steel concrete nails are the high carton steel to produce ...