DIY Channel Hydraulic Excavator
Material: wood Suitable
age: over 8 years old
Options:
hydraulic arm x1
hydraulic excavator x1
Principle:
Hydraulic transmission is a transmission mode that uses pressurized liquid in a closed system to transfer motion and power. It converts the mechanical energy into the pressure energy of the liquid, and then the pressure energy of the liquid into the mechanical energy.
Note: Dinosaur batteries need to be purchased by yourself.
Made an order, but did not correctly specify the address, and when I realized that the store had already sent my order. So he returned (I do not know how) the parcel back to himself, and I returned the money. Handsome!! Here I understand the quality of service and logistics. To the seller Thank you very much!! Shop can safely recommend!!