648: white plastic nata® eraser. Smooth, versatile and non-abrasive. Erases marks from all surfaces. Does not damage paper. White. Size of eraser: 3.1 x 1.9 x 0.9 cm. 430: soft synthetic rubber eraser. Can be used to erase a wide range of graphite pencilstrokes from all types of paper.Assorted colours: white, pink, green. Size of eraser: 2.8 x 2.8 x 1.3 cm.