"Alterna Jars and Blades" manufactures aftermarket blender containers that fit Blendtec Blenders, Vita Mix, Waring MX series of blenders (Raptor / 3.5 hp monsters), JTC OMNIBlend blenders, and many others with same kind of blender base specifications. The jar in the configuration to fit on Blendtec blenders has a removable blade assembly. The Alterna jar is reported as blending better, and is easier to clean, as well being made as a BPA-FREE copoloyester blender container. Spare blades and tampers are available for any of these configurations.