These polishes are specifically formulated by La Belle Epoque Pens for use on hard rubber (ebonite) and celluloid using high quality, non-toxic, and environmentally friendly products.
The polishes do also work well on other common pen plastics.
The polish comes in 2 grades (fine, and extra-fine). For best results the extra-fine is used after the fine in progression. The polishes are efficient, requiring very little product per pen. Each jar is good for 75-150 pens.