[PREMIUM MATERIAL]This blade is made of stainless steel, no need sharpening, rustproof and durable. [WELL DESIGNED]It breaks down the ingredients into their most nutrient-rich state, more absorbent with the brand new blade, which can effortlessly transform fruits and vegetables and protein drinks into a delicious and smooth texture. [CONVENIENT] The wires are straightened for easy startup. Includes pre-installed rubber gasket in base for a complete seal with mug. [GOOD KITCHEN UTENSILS] Make healthy cooking easier. Makes it easy to prepare your favorite meals and smoothies in no time. [WITH RUBBER SEAL]The threads are smoothed for easy on and off. Includes rubber gasket pre-installed in the base to ensure a complete seal with the mug. TIPS: 1. Kindly recommend you replace the blade every 6 months for performance. 2. Please make make sure the gear at the bottom is tightened before use. 3. Please make sure the rubber gasket put snugly into the bottom blade. The rubber gasket is used to avoiding leakage. 4. Please make sure you close the bottom blade tight enough on the cup before using it. 5. To avoid spilling, do not add past the "Max" fill line. Compatible with for 600-Watt Series Blender Model: -101, -101B, -101S, NBR-0601, NBR-0601WM, NBR-0801, NBR-1201 etc. Compatible with 900-Watt Series Blender Model: -201, NB9-0901, NB9-0901B, NB9-0901T, NB9-0901G, NB9-0901PINK, NB9-0901PUR, NB9-0901COR, NB9-0901S, NB9-0901W, NB9-0901RG, NB9-1301, NB9-1301PINK, NB9-1301G, NB9-1301B, NB9-1301COR, NB9-1301K, NB9-1301R, NB9-1301RG, NB9-1301S, NB9-1301T, NB9-1301PUR, NB9-1301W . Colour:gray+silver Material:stainless steel + plastic Package Contents: 2 * blender blade 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.