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: 340 Level: Medium Model size: 14.5 x 10.7 x 4.6 in (36.9 x 27.3 x 11.7 cm) Package size: 14.7 x 6.7 x 2 in (37.3 x 17 x 5 cm)

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: 315 Estimated time of assembly: 6 hours Level: Medium

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

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

Number of components: 305 Estimated time of assembly: 8 hours Level: Medium

Model size: 10.3*3.5*5.5 in (26.2*9*14 cm) Package size: 14.7*6.7*1.4 in (37.3*17*3.5 cm) Number of components: 457 Estimated time of assembly: 8 hours Level: Advanced

Number of components: 207 Estimated time of assembly: 4 hours Level: Easy

Model size: 9.5*4.6*4.1 in (24.1*11.6*10.5 cm) Package size: 14.7*6.7*1.4 in (37.3*17*3.5 cm) Number of components: 262 Estimated time of assembly: 4 hours Level: Easy

Model size: 8.3*3*5.3 in (21*7.5*13.5 cm) Package size: 14.7*6.7*1.3 in (37.3*17*3.4 cm) Number of components: 222 Estimated time of assembly: 4 hours Level: Easy

Model size: 9.5*4.7*5.1 in (24*12*13 cm) Package size: 14.7*6.7*2 in (37.3*17*5 cm) Number of components: 423 Estimated time of assembly: 8 hours Level: Advanced