Stainless Steel Cutter Blade Replacement for Vitamix Blender. Hardened stainless-steel blades never require sharpening. A double set of stainless-steel bearings increase blade life and maintain quieter operation. The blade is designed for quick, on-site replacement with an existing compatible container. Fits standard household 64 and 32 oz containers, and standard commercial 64, 48, and 32 oz containers. Does not fit new household low-profile 64 or 48 oz containers, or commercial MP, XP, Advance, or XL containers. Color: Silver and Black. Material: Metal and Plastic. Model Number for Vitamix Drive Socket Kit. The kit is made of durable material and tested for long lasting use. The drive socket couples the motor to the blade assembly and protects the motor if the blade assembly is blocked from rotating. This replacement drive socket kit is not for use with the Vitamix XL. Installation takes approximately 10 minutes. Package Contents: 1 x Blade, 1 x Drive Socket, 1 x Hex Wrench. Only the above package content is included. Other products are not included.