Each pen is double-ended, with a broad chisel nib for large area fills and a fine bullet tip for more detailed work. ProMarkers contain alcohol based inks. These ProMarker value packs are a great way to buy ProMarkers. Each set of five markers have been specially selected to work well together. Set 6 includes: Pastel Yellow, Pastel Blue, Pastel Green, Pastel Pink, Pastel Beige