This is a description taken from LEGO.com. Do not modify it.
Authentic bulldozer details!
This bulldozer is packed with moving, working parts -- just like the real thing! With rotating tracks and a dozer-blade that you can raise and lower using the control knob at the back, it can do anything a real bulldozer can do. Includes instructions for rebuilding into an excavator! Your builder will beam with accomplishment when this bull dozer build with working moving parts is complete! 2 in 1 model rebuilds into a Mini Excavator! Bulldozer blade can be raised/lowered while Excavator model features 360 degree turning and movable crane arm! Bulldozer measures 4" (10cm) long