Two employers want to file my H1 B. Is this possible

Yes, two different employers may file petitions on your behalf.

Many things are possible. Whether it workable, depends on the facts not in your post.

Two separate employers can file petitions for you. Do you plan on working for both employers in some capacity, or picking one? If you're planning on working for both, it could get sticky. If the petition each employer file varies materially from the job itself, you could run into some trouble, so each employer would want to make sure their respective petition is accurate as far as the capacity in which you'd be working.