Mayco Designer Liner Ceramic Glaze Writers - 1.25 Ounce each, Kit of All 10 Colors plus Free Instructional Booklet Kit includes one bottle each of all 10 available Mayco Designer Liner colors and Free Instruction Booklet. Designer Liner is clay based and heavily pigmented. Use this versatile product to create fine detail with lines, dots, and letters. The metal writer tip allows for ultimate control to draw ultra-fine or bold lines, typography and intricate illustrations. Designer Liner is best when used under non-moving transparent or semi-transparent glazes. Fires cone 06 - cone 6. Certified AP Non-toxic and Food Safe. Made in USA.