New In Open Box - Vitamix Personal Cup Adapter: Two 20-Ounce Blender Cups, Two Lids, and One Blender Adapter with Stainless-Steel Blades Compatibility: Designed only for Vitamix full-size blenders without wireless SELF-DETECT technology, including classic models like the 5200, VX1, Explorian Series, Propel Series, Alta Pro, 5300, 6300, 6500, 7500, 780, Aspire Series, Certified Reconditioned Professional Series 750, Creations Series, Professional Series, Total Nutrition Center, TurboBlend Series !! NOT compatible with Vitamix Ascent or Venturist Series machines