Faber-Castell TK-FINE-VARIO, a high-quality mechanical pencil with a knock mechanism and 0.9mm/1.0mm lead sizes. - Brand: Faber-Castell - Model Name: TK-FINE-VARIO L 0.9/1.0 - Lead Size: 0.9mm/1.0mm ★ I have confirmed that the lead advances with the knock mechanism. Please note that I have not been able to confirm other functions as I do not know how to use them. I also have other men's items that are available for price reduction. #minurub's Men's Items I have many other items for sale. #Click here for women's items only Brand: Stationery, Drafting, Professional, PVC-free, Hard, Soft