Mark-Tex 44 High-Purity Action MarkerPaint will not contaminate or adversely affect surface being marked. Low in chlorides. Valve action fiber tip. Dye and pigment based ink. Pen cap clip fits on pocket or clipboard. Threaded end can be screwed into a jig or apparatus for continuous identification application. Applicable Materials: Glass, Most Metals, Ceramic; Applications: Welding, Aircraft Industries, Ship/Boat/Marine Industries, Power Plants, Automotive Plants; Barrel Size: 44; Color: Black; Tip Type: Medium; Type: High Purity Marker; Weight: 0.07 lb.