Permanent universal marker, medium line width (M) approx. 1.0 mm. Wallet with 4 pieces: black, red, blue, green. For writing on transparencies (OHP), paper, plastic, glass, metal and almost all other materials. The marker's vibrantly coloured ink is quick-drying, water-proof and highly light resistant. The cap-off ink does not run dry even if the cap is removed for 2-3 days. It has a low odour and is free of toluol and xylol. Slim pocket model with practical clip cap. The black ink can be refilled using Maxx 645 refill station.