Double Concave Spherical Lenses: -10D - Pack of 5, Double Convex Spherical Lenses: +2D - Pack of 5, Glass Mirrors: Concave, 50mm - Pack of 5, Glass Mirrors: Convex, 50mm - Pack of 5, Large Newton's Cradle, Lens Bundle - Pack of 8, Newton Meters - Pack of 6, Sound Wave Demonstration Set by Philip Harris, Spouting Cylinder Apparatus and Ticker Timer Paper Tape Holder and Baseplatep