These inkjoy pens are joyful by name joyful by nature with a revolutionary inkjoy writing system youll get the best in effortless writing with fast flowing controlled ink which delivers crisp and clean lines every time the triangular barrel provides optimum comfort throughout usage and this pack of 10 comes with 1 of each black blue red green lime magenta purple orange mocha and turquoise revolutionary inkjoy writing system for effortless writing triangular barrel shape for comf