Craftsman 525 Snowblower TRAC-DRIVE Tank Tracks Treads Crawler Drive / GeaboxFor sale is this used Craftsman 525 Snowblower TRAC-DRIVE Tank Tracks Treads Crawler Drive with Gearbox. From a craftsman II with a 8 speed drive. Snowblower model 536.884900. All 6 forward and 2 reverse work. The bottom cover is not included. Snowblower that this.