Double-Edge Razor Blades . . . with Ultra-Fine Teeth! Special razor blades made just for model builders with 70 teeth per edge and are only .005 inches thick. You'll get the finest, smoothest cuts in plastic, resin and wood without leaving large gaps in the material. You can even cut 1/32 inch off the end of brass tubing with ease. Double-edged for twice the life. Package of 5. Use with #86084 Wood Handle sold separately