PSH Underglazes are intense, intermixable, colours formulated for use from cone 06 to cone 10 oxidation. They are available in 50 mL, 250 mL and 500 mL sizes; select size from drop down/fly-out menu. The tall and narrow 50 mL size can be turned into a fine line pen by fitting the tip with small diameter steel nibs. Thick applications of this color may cause crawling at Cone 6+