Product: Gold refill pen(gel ink) Model: GL300 Brand; KAPOK Pen length: 13cm Ball:0.8mm Features:1) There are silver, white and gold color.2) Silver Pens Are Especially Used In The Leather Industry.3) They Are Used For Leather Marking.4) The Line Is Obviously Seen On Dark Leather Material5) Excellent Quality And Reasonable Prices6) 10 Years' Experiences Of Producing These Pens silver pen