The Molymod® Molecular Model Set manufactured by Spiring Enterprises Ltd. contains: 1 Black Carbon 4-hole 4 White Hydrogen 1-hole 2 Blue Nitrogen 3-hole 3 Red Oxygen 2-hole 1 Yellow Sulfur 6-hole 1 Purple Phosphorous 3-hole 2 Green Halogen 1-hole 2 Gray "metal" 6-hole 1 Brown dsp3 5-hole 10 Medium Gray Links 6 Long Flexible Gray Links 4 Medium Purple Links