The AGCO Allis 6680 is a utility tractor built by SAME and distributed by AGCO Allis from 1991 to 1997. It belongs to the 6600 Series and was built in Italy. The tractor features a 4.0L 4-cylinder air-cooled diesel engine producing 79.27 hp (59.1 kW). It offers multiple transmission options including 12-speed synchromesh, 24-speed, 16-speed, and 30-speed partial power shift. The tractor has two- or four-wheel drive, mechanical foot-actuated rear differential lock, power steering, hydraulic wet disc brakes, and a cab with air-conditioning. Fuel capacity is 28.27 gallons (107.0 L) and hydraulic system capacity is 15.2 gallons (57.5 L). The rear hitch is type II/I with position and draft control and a rear lift capacity of 6,790 lbs (3079 kg). The PTO is independent with 540/1000 RPM options. Dimensions include a 2WD wheelbase of 96.4 inches (244 cm), 4WD wheelbase of 92.8 inches (235 cm), length of 161 inches (408 cm), width of 82.4 inches (209 cm), and height of 111.2 inches (282 cm). Shipping weight ranges from 6,724 to 7,385 lbs depending on configuration. Standard tires vary by drive type. Electrical system features a 12-volt battery and 55 amp alternator. Original price was approximately $40,000 in 1997.