The Felji Flat Milling Blade is a replacement part for NutriBullet NB-101B, NB-101S, and NB-201 blenders. It is made of BPA-free plastic and stainless steel materials, making it durable and safe to use. With a power of 900W, this blade can easily grind and mill nuts, seeds, and grains. It includes only one blender component, but it is compatible with NutriBullet 600W and 900W blenders. The Felji Flat Milling Blade comes with a 90-day manufacturer warranty. The color of the blade is gray and it is perfect for those who want to make their own flour at home.