I used this for winding practice for about six months. There are no noticeable scratches or stains, but please refrain from purchasing if you are sensitive to such things. Due to personal reasons, the earliest shipping date is March 9th. - Brand: NEW DELRIN - Material: Delrin - Type: Comb - Country of Manufacture: Japan ⚠️ Set of two ⚠️ One comb has a slight bend at the base of the metal part as shown in the photo. I don't think it will affect usage. Hairdresser National Examination Delrin Comb