Feature:1. Made of eco-friendly plastics material, with smooth surface, no scraps or cutting edges from the holes, wear resistance and can provides long service time.2. Uses spheres to represent atoms and s-ticks to represent chemical bonds.3. Can be used to build methane ball-and-stick model, ethane ball-and-stick model, ethylene ball-and-stick model, ethyne ball-and-stick model, benzene ball-and-stick model, phenol ball-and-stick model, ethanol ball-and-stick model, acetic acid ball-and-stick model, carbon dioxide ball-and-stick model, and etc..4. Easy to install and easy to detach, easy to build models for organic and inorganic chemistry.5. Comes with one plastics box, easy storage and with fine portability.6. Suitable for middle high school, high school and university teaching and studying.7. Help teachers and parents to cultivate children\u0027s interest in chemistry, makes learning chemical 3D molecule or atomic structures fun and interactive.Specification:This is a kind of quality chemistry molecular model kit, which is made of eco-friendly 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 children's interest in chemistry, makes learning chemical 3D molecule or atomic structures fun and interactive. Have a try.Features:Made of eco-friendly plastics material, with smooth surface, no scraps or cutting edges from the holes, wear resistance and can provides long service time.Uses spheres to represent atoms and s-ticks to represent chemical bonds.Can be used to build methane ball-and-stick model, ethane ball-and-stick model, ethylene ball-and-stick model, ethyne ball-and-stick model, benzene ball-and-stick model, phenol ball-and-stick model, ethanol ball-and-stick model, acetic acid ball-and-stick model, carbon dioxide ball-and-stick model, and etc..Easy to install and easy to detach, easy to build models for organic and inorganic chemistry.Comes with one plastics box, easy storage and with fine portability.Suitable for middle high school, high school and university teaching and studying.Help teachers and parents to cultivate children's interest in chemistry, makes learning chemical 3D molecule or atomic structures fun and interactive.Specifications:Name: Chemistry Molecular Model KitMaterial: PP plasticsModel: ZX-1032AAtoms, Holes/Angle, Color, Dia.(mm), Qty(pcs)H-Hydrogen, 1/ , white, 17mm, 30pcsC-Carbon, 2/180°, black, 23mm, 2pcs 3/120°, black, 23mm, 6pcs 4/190°28', black, 23mm, 15pcsO-Oxygen, 2/105°, red, 23mm, 6pcsN-Nitrogen, 3/107°, light-blue, 23mm, 3pcs 4/109°28', light-blue, 23mm, 4pcsS-Sulfur, 4/190°28', yellow, 23mm, 2pcs 6/90°, yellow, 23mm, 8pcsCl-Chlorine, 1/ , green, 23mm, 6pcsBr-Bromine, 1/ , brown, 23mm, 2pcsMetal, 1/ , silver-grey, 23mm, 1pcsP-Phosphorus, 5/120 90°, light-purple, 23mm, 1pcsChemical Bond(hardness), color, length(mm), quantity(pcs)Short-Bond(used for scale model singlebond), milk white, 10mm, 30pcsV-Bond(used for scale model double bond), white, 12mm, 6pcsMedium-Bond(singlebond), white, 27mm, 50pcsLong-Bond(double/triple bond), purple, 43mm, 18pcsOverength-Bond, milk white. 62mm, 6pcsDisconnector tool(used for disconnecting model), ivorywhite, 76mm, 1pcs90mm C60 set, 60pcs balls and 90 pcs hollowtubeItem size with box: 235 * 170 * 35mm / 9.25 * 6.69 * 1.38inPackage size: 235 * 170 * 35mm / 9.25 * 6.69 * 1.38inPackage weight: 543g / 1.20lbPacking List:1 * Box of Chemistry Molecular Model FittingsPackage List:1 * Box of Chemistry Molecular Model Fittings