Detailed Product Description 1) Large flat head, umbrella head2) Diamond point or cheisal 3) Smooth or ring or Screw shank4) All sizes are available in 1" x 12bwg, 1-1/4" x 12bwg, 1-1/2" x 12bwg, 2" x 12bwg 5) Mainly for nailing asphalt roofing feltsPacking: 1) Loose in carton of 20/25kgs or in coils2) Other packing based on customers' option