The Nutri Ninja Sip & Seal Lid Model 408KKU641 is compatible with the following Nutri Ninja models: Nutri Ninja Ninja BlendMax DUO with Auto-iQ Boost (BL2012) Nutri Ninja Ninja BlendMax DUO with Auto-iQ Boost (BL2013) Nutri Ninja Auto-iQ (BL480) Nutri Ninja Auto-iQ (BL480D) Nutri Ninja Auto-iQ (BL481) Nutri Ninja Auto-iQ (BL482) Nutri Ninja Auto-iQ Complete Extraction System (BL486CO) Nutri Ninja Auto-iQ Pro Complete (BL487) Nutri Ninja Auto-iQ Pro Complete (BL487A) Nutri Ninja Auto-iQ Pro Complete (BL488W) Nutri Ninja Auto-iQ Blender (BL490) Nutri Ninja Auto-iQ System (BL491) Nutri Ninja Auto-iQ System (BL492) Nutri Ninja Auto-iQ Compact System (BL492W) Nutri Ninja Ninja Blender DUO with Auto-iQ (BL640) Nutri Ninja Ninja Blender DUO with Auto-iQ (BL641) Nutri Ninja Ninja Blender DUO with Auto-iQ (BL642) Nutri Ninja Ninja Blender DUO with Auto-iQ (BL642W) Nutri Ninja Ninja Blender DUO with Auto-iQ (BL642Z) Nutri Ninja - Ninja Blender System with Auto-iQ (BL680) Nutri Ninja - Ninja Blender System with Auto-iQ (BL680A) Nutri Ninja - Ninja Blender System with Auto-iQ (BL682) Ninja Intelli-Sense Blender Duo (CT640C) Ninja Intelli-Sense Blender Duo (CT641) Ninja Intelli-Sense Kitchen System (CT680) Ninja Intelli-Sense Kitchen System (CT680A) Ninja Intelli-Sense Kitchen System (CT680SS) Ninja Intelli-Sense Kitchen System (CT680W) Ninja Intelli-Sense Kitchen System with Auto-Spiralizer (CT682SP) Nutri Ninja Nutri Bowl DUO with Auto-iQ Boost (NN100) Nutri Ninja Nutri Bowl DUO with Auto-iQ Boost (NN100A) Nutri Ninja Nutri Bowl DUO with Auto-iQ Boost (NN101) Nutri Ninja Nutri Bowl DUO with Auto-iQ Boost (NN102) Ninja 4-in-1 Kitchen System (Blender, Processor, Spiralizer, High Speed Blending Cup) (NN210)