... metric unit(mm)1/4" x 1/4"6.4mm x 6.4mm22,23,243/8" x 3/8"10.6mm ... x 10.6mm19,20,21,221/2" x 1/2"12. ... 7mm x 12.7mm16,17,18,19,20,21,22,235/8" x 5/8"16mm ... x 12.7mm16,17,18,19,20,211-1/2" x 1-1/2"38mm x 38mm14,15,16,17, ... DiameterIn inchIn metric unit(mm)1/2" x 1/2"12.7mm x 12.7mm16,17, ... Custom packing available at request. Welded wire mesh(1/4" 1/2" 3/8" 1" 2" )