The double honed replacement blade has a strong tip and flex so you do not have to worry about breaking their edge and tip. 

This versatile replacement blade fits with all standard light and medium duty xacto style knives.

Used with: a heavy-duty blade designed for whittling, carving and the initial shaping of a variety of different materials

Used for: model making, paper cutting, cake decorating, cricut vinyl cutting and polymere clay.

Used by: graphic artists, architects, car wrappers, designers, hobbyists, scrapbook artists and crafters.

Works with: K2, K5 & K6