... Mesh ISO9001:2000 Certification Aperture:1/4",3/8",1/2",5/8",3/4",1",2"etc... Material: 304 Stainless ... 8" x 3/8"10.6mm x 10.6mm19,20,21,221/2" x 1/2"12.7mm x 12.7mm16, ... 20,211" x 1/2"25.4mm x 12.7mm16,17,18,19,20,211-1/2" x 1-1/2"38mm x 38mm14, ... 15,16,17,18,191" x 2"25.4mm x ... OpeningWire DiameterIn inchIn metric unit(mm)1/2" x 1/2"12.7mm x 12.7mm16,17,18,19, ...