This Ninja Blender replacement blade is perfect for those in need of a new blade for their 40 or 48 oz pitcher. The blade has four blades and is made of stainless steel, making it durable and long-lasting. It is compatible with the QB1000 and QB1004 models. The multi-purpose blade is capable of blending, pureeing, and chopping various fruits and vegetables, making it a versatile addition to any kitchen. It is dishwasher safe and easy to clean, ensuring its longevity. Upgrade your blender with this Ninja Blender 4 & 2 Blade Replacement Part.