Ninja Blender Replacement Blade, 6 Fins Ninja Blender Blade Compatible with Ninja Blender BL660 BL770, Blender Replacement Parts for Ninja 16oz Cup Compact Personal Blender Blade(3.35 inch)

This replacement fit perfectly with no leakage. It works great

I have been using this product only 3 months and it is producing a brown greasy substance that is covering the outside of the cap and the blender. I use it to blend baby food and am concerned that it may also be leaking inside the cup.

Had my Ninja for several years, still works perfectly just needed the blade replacement. It works perfectly.

The section that House the blades gets burned while it's running. I purchased the full Ninja blender system with the individual small container that uses these blades. 3 replacements and I originally thought it was the gasket leaking but it is the blade component.

Cumple con lo que esperaba

UPDATE: The company saw my below review and reached out to help me troubleshoot. They sent multiple extra seals with the initial shipment so I put one in without realizing it already had one in it (I've never had to change the seal in my OEM blade topper). After removing that, I was able to fully put the top on my blender cups. It didn't seat super well in the actual Ninja, but after some finagling I got it in there and was able to successfully use it, so now a reasonable product...Original Review: So i was so excited when I got this, it appeared to match the OEM and was definitely sharp. Then I tried to use it and unfortunately it won't screw on all the way and therefore won't seat in the blender. It is totally unusable because of this. It looks so similar and does screw on some, but not all the way so either threads are wrong or shape of it is wrong.

Compatible con mi Ninja BL770! Anteriormente había pedido un vaso licuador grande para mi ninja y por error pedí uno más grande. Ahora lo elegí bien y compre el correcto, se siente más fuerte que el original y se puede escuchar que ajusta más en la licuadora, tritura más rápido porque este es nuevo, el mio ya perdió su filo pues ya tengo 2 años con mi licuadora, es bueno que aun vendan repuestos para ella, y ahora tengo dos gotas para cuidar mis repuestos. Los utensilios que vienen si que ayudan a limpiar y mantener protegida tu licuadora.

These blades fit existing ninja cups. They are dishwasher safe and have been holding up perfectly for the last month. The blend quality is as good as the original I have no complaints.Edit: 3 months since purchaseBlades have completely seized up and will not turn. Possibly will damage the blender as well. Unusable.