1It is designed to fit for Vitamix blender, operation is very quiet. 2Using food high strength stainless steel, super toughness, not easy to deform, easy to clean. 3Blender blade replacement parts, the damaged or old blade can be directly replaced. 4The blade replacement, it is easy to mash green leafy vegetables, stems, seeds, and fruits. 5The blade has double leaf, replacing the blade is a very simple process.Item Type: Blade Assembly Material: Stainless Steel Color: in the picture Size: Approx.9x6cm/3.5x2.4in(L x W) Weight: Approx.159g/5.6oz Installation method (replacement of the blade is a very simple process) Tools: For Vitamix wrench or a pair of pliers to remove the nut (for Vitamix wrench is recommended, which will save time and effort) 1. For Vitamix wrench or a pair of medium-sized pliers is required (not included). 2. Place in the gaps of the fixed nut. 3. Hold the handle and rotate it counterclockwise while adjusting the jaws in the gaps. This will loosen the fixing nut.1 x Blade Assembly1. Please allow 1 2in error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 3. Replace worn blade components. It is recommended to use for Vitamix wrench for installation. After taking out the old blade, you can start to install the new blade.The installation is a bit difficult. You can clean the threads on the lock ring. A little food grade grease on the thread will help a lot.