The Ninja Master Prep Food Processor 4-Blade Replacement 40oz Cannister QB1004 is a stainless steel replacement blade unit for the Ninja QB1004 model. It has the capabilities to chop, slice, and shred vegetables, nuts, fruit, and other items. The unit includes 4 BPA-free and dishwasher safe blades, with a capacity of 40 oz. The product is designed by the brand Ninja and measures 4 inches in depth, 5.5 inches in height, and 4 inches in width, weighing 1 lb.