TECHMATE Set of 7: 0.18/0.25/0.35/0.45/0.5/0.7/0.8 The precise, reliable and absolutely easy to use TG1-S technical drawing pens made ​​by Faber-Castell have a stainless steel point and are thus ideal for use on drawing paper and transparent paper. The technical drawing pens can be refilled with an environmentally compatible ink tank. Used but great condition and looks brand new. I am adding self-adhesive Hinging Tissue, Draft dots tape, X-Mark register mark sticker as free. Please see pic.