Felji Cross Blade Replacement for Baby Bullet Felji Cross Blade Replacements for Baby Bullet, includes rubber gasket ring. Diameter: 3.25 inches (84 mm); Height: 1.38 inches (34 mm). Compatible with 250W Baby Bullet Blenders Only. DOES NOT FIT Magic Bullet, NutriBullet or Nutri Ninja. We make no claims that these are original Magic/Baby Bullet products. We are not associated with Homeland Housewares LLC.