[Fit For]-- The Replacement Extractor Blade is Fit for 600w or Pro 900w Series. Models listed as below. 600w units number: NBR-0601, NBR-1201, -101, -101B, -101S; 900w units number: NB9-1301, -201. [Not Fit For]-- NOT COMPATIBLE with for RX(1700 watts), Lean (1200 watts), Baby or Nutri Ninja blenders. Please check your blender model before purchasing. [Powerful Stainless Steel Extractor Blades]-- The high-speed blade is made of food-safe stainless steel and sealed with silicone rubber gaskets. More Durable and no leakage. Use cyclonic action to easily break down tough ingredients. Effortlessly create your favorite smoothies, omelets, snacks and nut butters. [Included]-- 1 x Replacement Emulsifier Blade Assembly. 1 x Silicone Rubber Gasket O Ring pre-installed already in the blade. Blade Size: Outer Diameter/Inner Diameter: 10.5/9.8cm x Height: 4.2cm. [Note]-- 1 x Silicone Rubber Gasket O Ring pre-installed already in the blade. It may be loosen during the transportation, please put it snugly in the blade before use for best performance colour: gray Material: plastic + stainless steel Package Contents: 1 x Replacement Extractor Blades 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.