This 8″ multi-functional tool pen is made of durable aluminum alloy and features a combination of 8 interchangeable screwdriver bits—4 flat and 4 Phillips—held securely by a strong magnet. It’s an ideal choice for engineers, technicians, and workers in the construction industry. The pen also offers space for custom branding, making it a perfect promotional tool for mechanics, construction companies, architects, and anyone in the building industry. Dimensions: 4.5″ L x 0.6″ W.