4 Pcs Underglaze Pen Underglaze for Ceramics Ceramic Writing Pen Underglaze Permanent Porcelain Colored Pen (Black) Complete Pottery Painting Kit: Our set includes two versatile black underglaze pens, eliminating the need for separate purchases. Each pen is designed for both fine and thick line work, making it perfect for detailed designs on ceramics, enhancing both tactile and visual appeal. High-Temperature Resistant: Crafted from premium materials, these pens withstand firing temperatures between 2102 ℉ and 2336 ℉ (1150-1280 °C). This ensures that the vibrant colors remain brilliant and unfaded after firing, ideal for both amateur and professional ceramic artists. User-Friendly Design: To use, simply shake the pen, press it on paper until ink flows, and start painting. A gentle reminder to avoid excessive pressure to prevent ink seepage. These pens are designed for smooth, continuous drawing without staying too long on one spot. Versatile Application: Ideal for a wide range of ceramic surfaces, these underglaze pens are perfect for cups, plates, bowls, and more. They are excellent for outlining, tracing, drawing, writing, and customizing DIY ceramic projects with precision and ease. Note: There are slight color differences or differences in the actual product, which does not affect the use Colour: Black Material: plastic Package Contents: 4 Pieces Underglaze Pen Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.