DII drumski valjak Naučno inženjerstvo Konstrukcijski kompleti Drvena STEAM igračka Dečije kreativne obrazovne igračke Školski projekti
Material: wood Product size:8*16*11 cm (3.15*6.30*4.33 inches) Suitable age: over 5 years old Knowledge: The road roller, also known as the compactor, is a road repairing device. The road roller belongs to the category of road equipment in construction machinery. It is widely used in the filling and compacting of large-scale projects such as high-grade roads, railways, airport runways, dams, and stadiums. It can crush sand, semi-stick and sticky soil. Subgrade stabilized soil and asphalt concrete pavement layer. The roller is applied by the gravity of the machine itself and is suitable for various compaction operations so that the pressed layer is permanently deformed and compacted. Note: the price is for 1 set. The batteries are not included.
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