4M-Techcraft Pneumatic Arm

Assemble pneumatic arm 4M science kit for 5-7 year old kids. The toy excavator mechanism features a two-piece movable bucket that can be controlled with two syringes. Assemble a science toy according to the instructions with diagrams and learn about pneumatics (a branch of physics), pneumatic mechanisms and devices based on them. The body of the model is made from a set box.