Rustichella Penne Rigate is a tube-shaped pasta with a wider diameter and angled ends, known for its ridged surface that helps it hold onto sauce. The "rigate" refers to the ridges, and the "penne" shape is named after its resemblance to a pen or quill. Rustichella d'Abruzzo, a producer, uses natural ingredients like durum wheat and water, and extrudes the pasta through bronze dies for a rustic texture.