Prentice Hall Molecular Model Set For Organic Chemistry - Molymod This kit enables users to build virtually all simple molecules encountered in organic chemistry. Includes space-filling models that simulate the true shape of saturated compounds. Provides open models that form realistic single, double, and triple bonds — even strained rings. Allows smooth rotation of the bonds to make conformational analysis easy. Contains enough components to create several models at once. The components are precision-tooled from quality plastics, are virtually indestructible, and come in a sturdy plastic case for easy storage. Provides a useful Instruction Book — with photos, diagrams, and concise discussions of chemical principles. New, factory sealed. Eligible for Combined Shipping Discount within the United States Combined Shipping Discount within the U.S. for multiple purchases! $3.99 shipping for the first eligible item, $1.00 for each additional eligible item. No Limit! Items must be paid for together on a combined invoice to qualify. International: I will also combine shipping for international buyers, but shipping fees vary depending on total weight and destination. Email me for a combined international shipping quote before bidding.