YB001 DIY Piston Hydraulic Mechanical Arm Model Science Technology Learning Education Experiment Toys for Children

Features:
Easy to assemble and operate, inspire children's interest and curiosity.
Stimulating students' creative thinking and ability by learning physics.
Help teacher to make the science class more lively and interesting.
Small experiments can also consolidate students' mastery of physical knowledge.
Great playing model tools, children can DIY colors on.