Mudtools Drag Tool 1

Made of high carbon steel and tempered to be very hard, the Dragtool is designed to grace the hand and make a fluted mark in the clay. One end cuts a wider flute than the other. Whether you draw a long fluted line or chip away at the clay, the texture looks beautiful under a celadon or any glaze that breaks on the surface.
 
Images & Description from Mudtools.com