Features:1.Accessorries: 100pcs mercury refills2.You can use it to revise your design, temporary marking, draw lines and so on. PLUS WORDS: to earse the trace, you need get another leather erase pen not included which is especially designed for remove the mercury3.Especially designed for leather related material, fabric will be acceptable, but it depends, you39;d better do an experiment first before mass production4.NOTE: please always keep the cap on when not in use. For example, do not just lay the pen down without replacing the cap thinking you will be using it again in a second5.The tracing marker can use for shoes, bag and clothes making. Perfect DIY sewing notion gifts for her on birthday, mother39;s day, christmas or other festival Package List:100 X Mercury Refills