34° paper collated 3.1 x 90 smooth shank 12 micron minimum galvanised strip nails 34° paper collated 3.1 x 90 ring shank 12 micron minimum galvanised strip nails 34° paper collated 2.8 x 75 Ring shank 12 micron minimum galvanised strip nails 34° paper collated 2.8 x 65 Ring shank 12 micron minimum galvanised strip nails 34° paper collated 2.8 x 50 Ring shank 12 micron minimum galvanised strip nails