New Vitamix Advance Fits For 015990 15990 32 64 oz containers Blender Blade Assembly for Advance Blade Parts numbers： 15990 and 015990 Compatible models:Vitamix Advance replacement parts： 15978, 16016, 15981, and 16019 containers Compatible with: Household 64 and 32 oz containers, standard commercial 64, 48, and 32 oz containers 015990 Incompatible: DOESN'T fit new household low-profile 64 container or 48 ounce container DOESN'T fit commercial MP, XP or XL containers New Vitamix Advance Fits For 015990 15990 32 64 oz containers Blender Blade Assembly for Advance Blade Parts numbers： 15990 and 015990 Compatible models:Vitamix Advance replacement parts： 15978, 16016, 15981, and 16019 containers Compatible with: Household 64 and 32 oz containers, standard commercial 64, 48, and 32 oz containers 015990 Incompatible: DOESN'T fit new household low-profile 64 container or 48 ounce container DOESN'T fit commercial MP, XP or XL containers