Description: 【Science for Kids】: Science projects kit gift for teens age above 7 Years, Physics Experiment Model Kit, Nice birthday, holiday gifts and toys for kids, children, and teens 【Feature】: DIY Electric heat cutter, children science toys, physics experiments learning tool, diy physics experiment model kit 【Skills Development】: Our science kit will encourage your kids to step into the electrothermal science, stimulate learning interest and curiosity, train children to think, improve hands-on ability through disassembly and assembly, teaching children to fall in love with science and understand abstract knowledge 【Materials】: The science kits are made of PP material, safe and smooth 【Experimental Principle】: Convert the battery's electrical energy into thermal energy through the heating wire; 1. The power supply provides electrical energy; 2. The wire brings the current to the heating wire; 3. The resistance of the heating wire is very large. When the current through the heating wire, it heats up and the electrical energy is converted into thermal energy; 4. When the temperature of the heating wire reaches the melting point of the foam, the foam block can be easily cut; Specification: Material:PP Size Chart: 11cmx6.5cmx14cm/4.33inchx2.56inchx5.51inch Package Includes: 1 DIY Electric Heat Cutter(need assemble) Note: 1.This is not infant toy, please take away from children to avoid eating. 2.Please allow slightly errors due to manual measurement and different monitors.