Features: 1.Material：made of high quality food grade materials and stainless steel, rigorously tested and well-Designed, durable and longevous. 2.Compatible with Ninja Blender BL680 BL680A BL681A BL681C BL682 BL685 BL687CO BL770 BL770AMZ BL770W BL771 BL772 BL773CO BL780 BL910 BN600 BN601 BN601NP BN601WBKT BN800 BN800C BN801 BN801C CT680 CT680CO2SS CT680SS CT680SSCCO CT680W CT682SP. 3.The blade surface has an anti-scratch coating and its smooth surface is not prone to food residues and is easy to clean within minutes. 4.The blender blade replacement 4 blades has a smooth comfortable installation procedures, you can install it in seconds. 5.Extract vital nutrients, giving you optimum nutrition in every smoothie. 6.Instead of buying a whole new blender just b.