It is a big wick but when I looked at its burn diameter, it said about 80mm, and my candle jar diameter is 89mm. With the wick when I sized down one, it was tunneling straight down the center. With the double wicks, it had wax left on two sides, not around the whole jar. I’m curing for about a day or two as I wanted to test burn. I’ve also uploaded a picture of my jar diameter if that helps! Also I’ve just bought some cdn wicks in 2 sizes (thank you for the suggestion!) and I am doing a test burn with them on some candles I made a week or two ago.