Add to Favorite Sellers. Spec Cast 1/16 International Harvester W400 Gas High Detail Tractor ZJD1660. Recommended age 14+ years, Not Recommended for play. Highly detailed collectors model manufactured by Spec Cast. Rubber Tires with metal rims, Steerable front End. International Harvester W400 Gas Model. Approximate dimensions of tractor: 8.5in L x 5in H x 4.5in W. This 1/16 scale International Harvester W400 Gas High Detail tractor is a highly detailed collector’s model by SpecCast. Featuring rubber tires with metal rims and a steerable front end, it showcases the authentic design of this classic tractor. Due to its age, packaging may have imperfections, but the item remains new in box unless otherwise noted. A must-have for vintage farm equipment collectors. We are not open Saturday or Sunday so you may not receive a reply to questions posed during the weekend until Monday.