This is the 60ml ink refill for the iconic Magic Ink Glass Body, Extra Wide and No. 500 markers. The Magic Ink formula is oil based and guaranteed to leave lasting marks on any surface including glass, concrete, wood, and leather. Try this ink with a brush for art projects or use it to fill many of the empty mops and markers carried on our site! This product is highly flammable and is for professional use only. Keep out of reach of children and use only in well ventilated areas.