... Mesh ISO9001:2000 Certification Aperture:1/4",3/8",1/2",5/8",3/4",1",2"etc... Material: 304 ... DiameterIn inchIn metric unit(mm)1/4" x 1/4"6.4mm x 6.4mm22,23,243/8" x 3/8" ... 5/8"16mm x 16mm18,19,20,21,3/4" x 3/4"19.1mm x 19.1mm16,17,18,19, ... 11mm,1.83mm,1.65mm2" x 4"50mm x 100mm2.11mm,2.5mm4" x 4"100mm x 100mm2.0mm,2.5mmTechnical ... 7mm x 12.7mm16,17,18,19,20,213/4" x 3/4"19mm x 19mm16,17,18,19,20,211" ...