Hydraulic Mechanical Arm Diy Models & Building Toy Science

Wood material,eco-friendly and non-,safe for use,Let the ild understand how the ic arm works,Cultivate ildren #39;s ability to use both hands and brain,Allows ildren to experience the fun of DIY Hydraulic transmission is a kind of transmission mode that uses the pressurized in the closed system to transfer motion and power The meanical energy is converted to the pressure energy of the ,and then the pressure energy of the is converted to meanical energy Push the piston rod of the cylinder by hand to transfer energy to water through the piston,Water pressure can be transferred to the meanical arm through the piston rod of the small needle cylinder Color:wood color Material:wooden Size:531230cm Package Contents: 1 set meanical arm DIY toysOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is /- 1-3cm.