Kores Korellos 2In1 Are High Quality Double-Ended Felt Tip Pens With A Fine And A Conic Tip. Fine Tip Is Perfect For Precise Drawing And Colouring, While Conic Tip Is Better For Faster Colouring. Line Width: From 1 Mm To 4Mm. Constant And High Ink Flow Ensures Smooth And Easy Application. Pens Can Be Left With The Cap Off For Up To 48 Hours Without Drying Out. The Water-Based Ink Washes Out Of Most Textiles At 40C.