Cricut Maker Knife Blade Replacement (without Drive Housing); Replacement blade that fits the Knife Blade Drive Housing (sold separately) for precise cuts through thicker or denser materials such as balsa, matboard, leather, craft foam, and more. Add texture and dimension to your projects. 1 premium 12 mm carbide Knife Blade; For use with Cricut Maker only. Requires Knife Blade Drive Housing (sold separately). Safety Changing Cap protects fingers from blade. Not recommended for cutting images smaller than ; Requires computer with Design Space?; not compatible with mobile apps. Qualified Knife Blade cutting materials include: Balsa wood, up to 3/32?, Basswood, up to 1/16", Tooling leather, up to 7 oz, Garment leather, up to 5oz, Cricut Chipboard, 2mm, Matboard, 2-ply or 4-ply, Craft foam, up to 3mm