This brushed stainless steel stopper has vacuum action to protect the flavor & freshness of your wine. Simply place the stopper in the bottle and it will self-lock, and the silicone insert creates an airtight seal. To release, just push the button. For permanent imprint, this item is laser engraved. 24hr production not available for direct imprinting. 3rd imprint option Pad Print on Top (1 color only) 7/8" diameter. 4th imprint option Pad Printed, Side (optional, 2 colors max), 3/8" w x 1 1/4"h.