model kit, which is made of eco-friendly PP plastics material, wear resistance and can provides long service time. Uses spheres to represent atoms and s-ticks to represent chemical bonds. Easy to install and easy to detach, easy to build models for organic and inorganic chemistry. Help teachers and parents to cultivate childrens interest in chemistry, makes learning chemical 3D molecule or atomic structures fun and interactive. Have a try. Specifications: Name: Chemistry Molecular Model Kit Material: PP plastics Model: ZX-1032A Atoms, Holes/Angle, Color, Dia.(mm), Qty(pcs) H-Hydrogen, 1/ , white, 17mm, 30pcs C-Carbon, 2/180, black, 23mm, 2pcs 3/120, black, 23mm, 6pcs 4/19028, black, 23mm, 15pcs O-Oxygen, 2/105, red, 23mm, 6pcs N-Nitrogen, 3/107, light-blue, 23mm, 3pcs 4/10928, light-blue, 23mm, 4pcs S-Sulfur, 4/19028, yellow, 23mm, 2pcs 6/90, yellow, 23mm, 8pcs Cl-Chlorine, 1/ , green, 23mm, 6pcs Br-Bromine, 1/ , brown, 23mm, 2pcs Metal, 1/ , silver-grey, 23mm, 1pcs P-Phosphorus, 5/120 90, light-purple, 23mm, 1pcs Chemical Bond(hardness), color, length(mm), quantity(pcs) Short-Bond(used for scale model singlebond), milk white, 10mm, 30pcs V-Bond(used for scale model double bond), white, 12mm, 6pcs Medium-Bond(singlebond), white, 27mm, 50pcs Long-Bond(double/triple bond), purple, 43mm, 18pcs Overength-Bond, milk white. 62mm, 6pcs Disconnector tool(used for disconnecting model), ivorywhite, 76mm, 1pcs 90mm C60 set, 60pcs balls and 90 pcs hollowtube Item size with box: 235 x 170 x 35mm / 9.25 x 6.69 x 1.38in Package size: 235 x 170 x 35mm / 9.25 x 6.69 x 1.38in Package weight: 543g / 1.20lb Packing List: 1 x Box of Chemistry Molecular Model Fittings Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.