Made of food grade 304 (18/8) stainless steel, BPA free Size: 11.5cm x 9cm. Works great with most regular size & wide necked canned tuna Simply place this handy device on top of your tin can, and the integrated holes will remove any excess water Its round design discourages bacteria growth, with no corners or crevices for dirt to hide in, very hygienic Stronger and more sturdy than plastic canning colander, no chance of breaking