The eraser and you still Mono. Available in a variety of sizes and variations in the office work support. Strong power and difficult to break off. Thickness: 5.5 mm the eraser kui込mi resistant so they wont break resistant u cut. ● Eraser for general notes Ruled, college ruled (7 mm) B ruled 1 lines (6 mm) Thinner, so it can be brushed. ● Eraser Size: Length 67 x Width 18 x Thickness 5.5 mm.