Please read my profile before purchasing or asking questions. These are homemade, so there may be some variation in the finish. The material is similar to the Studio Ocean Mark fastener spool belt. I accept orders for lengths under 30cm. In the fourth photo, choose from a belt width of 1.5cm or 2cm. I use these myself, and 20cm is sufficient for an IM Z 200. The 2cm width is a perfect fit. In the fifth photo, if you'd like, I can write on them as neatly as possible.