concrete screw C1022 material Dia:7.5mm Length:52--212mm zinc plated Torx-25 head CONCRETE SCREWRaw materialC1022Diameter7.5mmLength52,72,92,112,132,152,182,202,212,60,80,100,120,150,170,190,210ShankHI-LOW thread,TORX DRIVESurfaceZinc plated ( yellow, white)Packing100pc/box,25kg/carton Concrete screw