... for steel nails, concrete nails or masonry nail.3) Nail Sizes: 18 to 64MM with diameter of ... 2.2MM 2.1MM or 1.8MM4) Nail Usage: for connecting the concrete, ... in 2mm.Main products: Pneumatic steel strip nail, concrete nails, spanker bolt, special steel nail, pneumatic ... . Main products are: Pneumatic steel strip nail, concrete nails, spanker bolt, special steel nail, pneumatic ...