GALV.ROOFING CONCRETE NAILS WITH BIG HEAD Concrete nail GT12L0003 GALV.ROOFING CONCRETE NAILS ... ISO9001:2000Hardness:HRC48 to 52Shrank:smooth,grooved,spiral,twistPoint:diamond pointSupply ability:20metric ton per month Delivery time : ... 25days for a 20’fclSurface treatment:polished diamond point,grooved,twist,smooth body,color white,blue,Black ... (loose) GALV.ROOFING CONCRETE NAILS WITH BIG HEAD