Product Description Spirax Lecture Books are 7 Hole Punched for use in 2,3 or 4 Ring Binders. All pages are perforated for ease of removal and filing. 7mm ruling and red ruled margin. Product Features • 7 Hole punched quality paper for use in 2,3 or 4 Ring Binders • Red Ruled margin with 7mm ruling. • Spiral bound on the top of the book. • Perforated Pages allow you to remove and file paper with ease. • 140 Pages