STAEDTLER Noris Club 512 128 Double Sharpener Triangular Pack of 10 in Cardboard Box

Use for pin diameters: up to 8.2 mm diameter (thin), up to 10.2 mm diameter (thick) 3-point fixing of the knife for extra long service life Extra long guide to prevent the pins from tilting Extra large cut-out for easy removal of broken leads Handy triangular format