The trademark of Mobius & Rupert's blades? Quality. They produce all blades in house in Erlangen, Germany. Always reliable and always clean so that your sharpener works its magic. Each replacement comes in a pack of 10 blades to last a very long time.
A fourth generation German company, Mobius and Rupert started making pencil sharpeners in 1922. Their factory was located in the Erlangan, the heart of the European pencil industry. Surrounded by pencil makers, they focused on a product that allows each pencil to be used with precision until worn to a stub so short it can no longer be held comfortably in a human hand. This factory in Germany continues to produces all of their products.