A host of other metal parts for attachment and setup adjustment are included

6:1 ratio gearbox with heavy-duty sealed gear differential and extremely adjustable slipper clutch

NOTE: Must use round shape type battery pack

World Champion's choice

Robotime - Classic 3D Wood Puzzles; Eiffel Tower COR00474-R A host of other metalRobotime Rolife TG501 is an easy level DIY 3D model of famous architecture the Eiffel Tower. Great 3D wooden puzzle for both adults and kids. It is an interesting educational toy, lovely home decorations, and a great holiday gift (such as Christmas, Birthday) for boys & girls, teens & adults. Assembled Size: 165*157*365 mm (6. 5*6. 18*14. 37 in) Wood Pieces: 122 pcs Assembly Time: Around 3 Hours