Number of parts: 247 Time of assembly: 4 Hours Model Size: from 4,4*2,6*1 to 13*5,9*3,5 cm

Wooden mechanical 3D puzzles by Ugears. Heavy Boy Set: Heavy Boy Truck VM-03 that moves without batteries, and Heavy Boy Truck Trailer VM-03. Assemble without glue. Perfect gift!

Number of components: 170 Estimated time of assembly: 3 hours Level: Easy

Model size: 36 x 4.9 x 39 in Package size: 14.9 x 6.7 x 2 in Number of parts: 504 Level:  Advanced Assembly Time: 7 hours Recommended Age: 14+

Model size: 7.8 x 9.5 x 4.6 in (19.8 x 24 x 11.6 cm) Package size: 14.7 x 6.7 x 2 in (37.3 x 17 x 5 cm) Electronic components: Yes Number of components: 295 Estimated time of assembly: 6 hours

Number of components: 200 Estimated time of assembly: 3 hours Level: Easy

Model size: 16.7*7.3*11.6 in (42.5*18.5*29.5cm) Package size: 14.9*6.7*2 in (37.8*17*5 cm) Number of components: 402 Estimated time of assembly: 9 hours Level: Advanced

Model size: 14.8*5.8*3.9 in (37.5*14.7*10 cm) Package size: 14.7*6.7*2 in (37.3*17*5 cm) Number of components: 249 Estimated time of assembly: 8 hours Level: Advanced

Model size: 8.9 x 3.1 x 3.3 in  Package size: 14.9 x 6.7 x 1.1 in Number of parts: 246 Level: Medium Assembly Time: 6 hours Recommended Age: 14+ Kit weight: 1.48 lbs Manufacturer: UGears

Number of components: 400 Estimated time of assembly: 8 hours Level: Medium

Number of components: 265 Estimated time of assembly: 5 hours Level: Medium

Number of components: 84 Estimated time of assembly: 1 hour Level: Easy