Mobius + Ruppert Brass Pencil Sharpener Replacement Blades - MADE in GERMANY Comes in a 3 pack only. NO LONGER AVAILABLE in 10 Pk Mobius + Ruppert sharpeners are German specialist. We carry all their different sharpeners, see our other listings. They are considered the finest in the world & available in 4 sizes. Please note these blades are ONLY for POLLUx (601) or Castor (610) sharpeners. Mobius + Ruppert | M+R Sharpener Replacement Blades For Pollex & Castor Sharpeners - 3 Pack Made in Germany Finest The World