BIC 4 Colours 3+1 retractable refillable ball pen featuring 3 medium nibs for normal points and a refillable mechanical pencil with 0.7mm HB lead. This pen is perfect for home, school or office with everything you might need in 1 pen. With 3 standard colours you can co-ordinate your work and for the finer details you can use the mechanical pencil, which comes with a handy eraser.