Use this black sublimation pen set with a variety of tip styles to personalize sublimation surfaces by hand. You can incorporate patterns, custom sketches, designs and more onto surfaces like tumblers, keychains, coasters, tags and wind spinners. Details: Black Assorted tip styles 5.5" (13.97 cm) pen length 6 pens Water-based sublimation ink Acid free Heat-activated and permanent Instructions included on packaging Conforms to ASTM D-4236 Contents: 2 round tip pens (1 mm) 2 fine tip pens (0.4 mm) 2 chisel tip pens (3.5 mm) WARNING: Sublimation should be applied in a well-ventilated environment. Avoid breathing fumes or vapors and avoid contact with eyes, skin and clothing. Not intended for use on skin. Adult use only.