The Candlewicking foot has a deep tunnel on the underside of the foot to feed over a built up stitch.
G: Expression 2038/ Creative Expression 2048/ Creative 7530,7550, 7562, 7570,2134, 2140, 2144, 2170/ Performance 2054, 2056, 2058, - 1475, 1467,1471, 1229 (Not IDT)