Concrete Screw

*DIAMETER:5/16 ; 1/4
*SIZE RANGE:1 1/4 ~ 4 " Inch
*MATERIAL:C1018/C1022 STEEL / STAINLESS STEEL
*PLATING:
ZP,YZ,BLACK/GREY PHOSPHATED,
RUSPERT,DACROTIZE,XYLAN...ETC.