This Dozer has working hydraulics the Blade is 17" wide made from brass. The blade tilts and raises. the ripper lowers and raises ripper is hydraulically operated and can actually rip into the dirt.. the hydraulic cylinders generate 125psi each.tracks are all metal and individually machined and that you can individually control each tracks movement by radio control to turn around in the bulldozers own length, The length of the dozer is 28" width is 17". The chassis are made from aluminum. the motors have enough power to push around a fully loaded 3 yard dumpster.This model also comes with a rock display base and tons of extras parts and spares almost enough to make another one. Yes this toy can actually excavate your yard. this is a one of a kind fully functional model. Never to be reproduced The original fabrication cost for this one of a kind model was $18,000.00 The reserve is much lower than that. Don't miss this one as a collectible or as a workhorse around the house. Shipping to be determined shipping from zip code 98665. Payment by cashiers check personal checks must clear first before shipping. I buy model kit collections any questions please call.