... :ss304 2.hole size:1/2",1/4'',5/8'',3/4",1" and so on 3.0.5-1.2mm 4.anti-rust stainless steel ... Usage: They are widely used in industry, agriculture, construction, transport and mining .Such as machine protection cover, ranch fender, garden fence ... " x 1/4"6.4mm x 6.4mm22,23,243/8" x 3/8"10.6mm x 10.6mm19,20,21,221/2 ... ,19,20,21,22,235/8" x 5/8"16mm x 16mm18,19,20,21,3/4" x 3/4"19.1mm x 19 ...