1.This replacement 6-blade is ONLY compatible with Ninja Professional Blender 72 OZ Pitcher For Ninja 72oz 1100w 1200w including BL610, BL610BRN, BL610C, BL660, BL660A, BL660W, BL660WM, BL661BBYC, BL663, BL663CO, BL665QBK, BL665QCN, BL665QWH, BL710WM, BL710WMC, BL740, BL740C, CO610B, CO650B, CT610, CT610C, CT611C and BC701CCO. Please refer to image No.2 to check your original blade's base shape before placing . 2.EXCELLENT MATERIALS AND QUALITY: The Ninja 72 oz Blender's 6-blade replacement is made of food-grade stainless steel, corrosion-resistant and BPA-.The blades are razor-sharp and feature a 6-bladed design that blends food well without leaving behind un-mixed crumbs. The extra hardness also makes it resistant to damage. Please note Do not touch the blade with your skin! 3.Value for Money -SAVING MONEY:Our 6-stacked blade assembly replacement for Ninja can replace your original dull or damaged blades to save you amount of money without buying another expensive blender. Saves you tons of time and money 4.Easy to Clean and Install:This 6-blade replacement parts for ninja blender is already assembled, you just need to install it to the pitcher torque which is very easy. The smooth surface of the blade is not prone to food residue and is easy to clean. You can put it in the dishwasher to clean and your hands. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.