TO INSTALL WICK INTO CERAMIC, JUST PUSH WHILE TWIESTING. THE NOTCH ON THE CERAMIC PLUG DOES TWO THINGS: IT LETS AIR INTO THE BOTTLE AND IF THE PLUG GETS STUCK YOU CAN INSERT A TOOL TO WIGGLE IT OUT. CAUTION CERAMIC PLUG WILL GET VERY HOT DO NOT TOUCH. LET COOL BEFORE TRYING TO REMOVE CERAMIC PLUG 5 Ceramic Wine Bottle Wick Holders and 5' of Turbo Air Core Technology Wick 3/16" x 5' Long. Round Cotton Wick. These high quality round cotton wicks are Made In The USA!!! These are perfect replacement wicks for other oil burning lamps and lanterns which require a 3/16" round cotton wick. Cut to the length you need. Thank you for looking. Ceramic Holders are made in China the wick is Made in the USA.