8263 Snow Groomer is a TECHNICset released in 2009. It contains 590 pieces, and can be rebuilt into an Arctic Tracker.
This is a description taken from LEGO.com. Do not modify it.
Conquer the slopes!
Take on even the steepest snowy slopes with the snow groomer’s wide, rotating tracks! Control the front blade with the joystick behind the cabin, or turn the gear wheel to raise or lower the rear grinder. Includes instructions for rebuilding into an all-weather Arctic Tracker!
An exciting and challenging building experience with this 2-in-1 real world model!
Snow Groomer has moveable wide tracks!
Front and rear blade move up and down!
Rebuilds into an Arctic Tracker!
Snow Groomer measures 14 inches (35.6cm) long and 6½ inches (16.5cm) wide!