I'm looking for Rocker switch

I’m looking for Rocker switch that will fit my cut out plate hole 30mm x 15mm on stainless steel. can you send me the part number so I can buy them

Welcome to the Digikey tech forum. We have this list of rocker switches that are close to the cutout dimension you listed. You will need to verify if one of these will fit properly and also select the proper voltage rating, current rating and switch function based on the application.