The Grog Full Metal Paint Squeezer comes with a revolutionary 25mm tip that is made of extra strong fabric, designed to be writable on any surface, both rough and polished. Designed with the artist in mind it is the perfect tool for any large surface. The soft plastic body of the marker makes it easy to control the flow of paint while using it. The Grog 25 FMP has 100ml of Full Metal Paint compared to the usual 20-25ml.