material: Be woven or welded with low carbon steel wire and al-mg alloywire opening:6.4mm*6.4mm~50.8mm... according to customer's requestment used in protecting of road,railway,airport,residence,small district,port and dock,Garden ,raise,husbandry,etc. Specification List of Welded Wire Mesh: Opening Wire Diameter In inch In metric unit(mm) 1/4" x 1/4" 6.4mm x 6.4mm 22,23,24 3/8" x 3/8" 10.6mm x 10.6mm 19,20,21,22 1/2" x 1/2" 12.7mm x 12.7mm 16,17,18,19,20,21,22,23 5/8" x 5/8" 16mm x 16mm 18,19,20,21, 3/4" x 3/4" 19.1mm x 19.1mm 16,17,18,19,20,21 1" x 1/2" 25.4mm x 12.7mm 16,17,18,19,20,21 1-1/2" x 1-1/2" 38mm x 38mm 14,15,16,17,18,19 1" x 2" 25.4mm x 50.8mm 14,15,16 2" x 2" 50.8mm x 50.8mm 12,13,14,15,16 Technical Note: 1.Standard roll length: 30m;width: 0.5m to 1.8m 2.Special sizes available at request 3.Packing: in waterproof paper in rolls. Custom packing available at request.