Posca PC-1MR 18 Pen Set - In Limited Edition Plastic Wallet - Extra Black and White Limited Edition pack of 18 PC-1MRs from Posca, in a handy assorted plastic wallet. Features the full range of 16 1MRs, as well as an extra Black and White. As the finest marker within the Posca range, the 1MRs extra narrow 0.7mm nib makes it perfect for intricate detail and writing Writes on Metal, Glass, Plastic, Stone, Fabric, Terracotta, Porcelain, and many more - Virtually any surface. Full list of colours in Product Description.