[Compatible with]The 6 Fins Ninja compatible with Auto iQ 900W: BL450-70, BL451-70, BL454-70, BL455-70, 1000W: BL480-70, BL480W-70, BL481-70, BL482-70, BL483-70,BL484-70 . confirem your blender base is 6 Fin Female placing an order! thanks. [Premium Quailty]The ninja blade replacement is made of food-grade high quality material, all the materials are free, dishwasher safe and anti-. [Saveing Money]The ninja blender replacement blade is a common replacement part. this seal sits between the top of the blade and the bottom of the jar. If your juicer has problems such as water leakage, damaged blades, etc. The part can perfectly solve these problems of your blender. It'll help you save money then 't having to buy a new juicer. [Note]Base Diameter: 3.94 inches/10cm, fits for 18/24/32 OZ cups, NOT fits for 16 OZ cups. color:Black Material:ABS+stainless steel Package Contents: 1 x 6 Fin Bottom Blade Replacement 2 x Sealing Washer Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.