Compatible with Original Magic Bullet 250W MB1001 Only. Does NOT fit Nutribullet by Magic Bullet. Does NOT fit Magic Bullet Mini or Baby Bullet Four 16 Ounce Cups Please note these are standard 16 Ounce cups and not the large 22oz cups. Do not use with hot liquid. Compatible with Original Magic Bullet Only. Does NOT fit Nutribullet by Magic Bullet. Does NOT fit Magic Bullet Mini or Baby Bullet. Four 16 Ounce Cups. Do not use with hot liquid. Compatible with Magic Bullet Blender MB-1001, MB-1001B, MBR-1101, MBR-1701, MBR-1702, MBR-0301 Blender