Construction Machinery (Qiji 4805)

About this set

This KEEPPLEY 4805 Construction Machinery set sits in the Unlimited Ideas line, with 509 parts and a 6+ age mark on the box. Difficulty is 2/5, so it is a low-barrier build. The model comes in yellow with black tracks and grey structural pieces, built as an excavator: a segmented boom with joints, a bucket at the front, tracks and a gear structure underneath, plus a set of mechanical legs. Build the track and gear chassis first, then attach the boom sections and bucket, and finish with the legs; lining up the segmented joints is easier that way. The box highlights 3 creative builds and endless ways to build, so after the excavator you can tear it down and rebuild the other two forms, and the grey structure parts separate cleanly from the yellow shell. It suits kids aged 6 and up meeting brick mechanics for the first time, and MOC builders who want an engineering theme from a small part count.