Extractor blade Compatible with Nutribullet 600W, 900W, NB-101B, NB-101S, NB-201, NBR-0601, NBR-1201, NB9-1301, NB-WL088D-23, 900 Pro Series Blenders Only. Does NOT fit MB1001, Nutribullet RX. This blade assembly does NOT fit Any Nutri Ninja Models. It is recommended to replace the blade assembly once a year to have your Blender to run smoothly. The blade is made of stainless steel and never needs sharpening. The gasket is included and is assembled in the blade housing. We are not affiliated in ANYWAY with Homeland Housewares, NutriBullet OR Magic Bullet.