Roberson : Professional Glass Muller : 10cm (Apx.4in) : For Mixing and Grinding Pigment

Mullers are used to grind pigment to a floury consistency, for mixing in a suitable oil or medium. In order for a pigment to color the medium richly and evenly, it must be finely ground. This medium-sized glass muller has an ergonomic handle and is robust enough to survive extensive grinding.