This Z scale (1/220 scale) kit is based on an early 1970’s CAT 955 crawler loader (before mandatory ROPS requirement). It’s a midsized crawler loader with an operating weight of about 15 tons with a 130 horsepower diesel power plant and a 2 cubic yard general purpose bucket. -------------------------------------------------------------------------------------------------------------------------------------------------------------------NOTE: MODEL CAN ONLY BE PROPERLY PRINTED IN FROSTED ULTRA DETAIL MATERIAL. FEATURES ARE TOO SMALL FOR PRINTING IN OTHER MATERIALS. This kit has extremely small parts that can easily get lost forever in your carpet or floor, handle with great care. It is highly recommended you clean your kit parts in an ultrasonic cleaner with dawn dishwashing liquid (non bleach formula) and water mixture before painting and final assembly. For best results, airbrush parts in desired color scheme before final assembly. Most important, have fun building your kit and add it to your Z scale layout!