Q&AQuestion:Can this be used to cook food in a 400 degree convection oven?Answer:I have only used it up to a temperature of boiling water (approx 212 deg F). At this a boiling water temperature the racks have worked very well for me.Question:What pot do you use with these? I want to get the right one.Answer:I use it to make steam bread.Question:Can this be placed in the bottom of a pot to do canning on?Answer:I bought it to use in my stainless steel stock pot to do water bath canning and it works great.Question:What are the hole sizes on the plate?Answer:I did not measure, but a small grape could not fall through.Specification:Item Type: Cooking SteamerMaterial: Stainless steel Color: SilverSize:S: 20*20*5cm / 7.9*7.9*1.9 in(Approx.)M: 24*24*5cm / 9.5*9 .5*1.9 in(Approx.)L: 26*26*5cm / 10.2*10.2*1.9 in(Approx.)Package List:1 * Steam trayNote:1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.