Roaring Spring 4x4 Graph Ruled Spiral Lab Notebook, Brown Kraft Cover - 50 Sheets - 100 Pages - Printed - Spiral Bound - Both Side Ruling Surface - 4 Vertical Squares - 3 Hole(s) - 20 lb Basis Weight - 75 g/m² Grammage - 11" x 8 1/2" - 0.30" x 8

Quad Lab Notebook is great for great for science classes or design drawing. Each sheet has 4 x 4 quad ruling for technical work. They are three-hole punched to fit inside standard three-ring binders. Wire ends are coil-locked for snag-proof performance. Cover is made of kraft material. Notebook contains 80 white sheets (20 lb.).