3D CAD Model for Product Design

I need a 3D CAD model focused on product design. The primary goal is to create a prototype 3D model. The final deliverable should be in the STEP file format. Other file formats like STL and OBJ are not required but could be considered for future needs.

Key Requirements:
- Develop a 3D CAD model for product design.
- Focus on creating a prototype 3D model.
- Deliver the final model in STEP format.

Ideal Skills and Experience:
- Proficiency in 3D CAD modeling for product design.
- Experience in creating prototype 3D models.
- Familiarity with exporting models in STEP format.