Mr.Garden 1/8 Inch Fiberglass Wicks with Glass Holder for Oil Lamps 4.5 Inch Long, Set of 12 Fiberglass wicks with glass holder Wicks diameter: 1/8 inch, wicks length: 4.5 inch Glass tube diameter: 0.15 inch, glass tube length: 1.1 inch Environmentally friendly and smokeless wicks Work perfectly for candle rocks